List of Chinese inventions

A bronze Chinese crossbow trigger mechanism with a butt plate (the wooden components have since eroded and disappeared), inlaid with silver, from either the late Warring States period (403–256 BC) or the early Han Dynasty (202 BC – AD 220)

China has been the source of many innovations, scientific discoveries and inventions.^[1] This includes the Four Great Inventions: papermaking, the compass, gunpowder, and printing (both woodblock and movable type). The list below contains these and other inventions in China attested by archaeology or history.

The historical region now known as China experienced a history involving mechanics, hydraulics and mathematics applied to horology, metallurgy, astronomy, agriculture, engineering, music theory, craftsmanship, naval architecture and warfare. By the Warring States period (403–221 BC), inhabitants of the Warring States had advanced metallurgic technology, including the blast furnace and cupola furnace, while the finery forge and puddling process were known by the Han Dynasty (202 BC–AD 220). A sophisticated economic system in imperial China gave birth to inventions such as paper money during the Song Dynasty (960–1279). The invention of gunpowder during the mid 9th century led to an array of inventions such as the fire lance, land mine, naval mine, hand cannon, exploding cannonballs, multistage rocket and rocket bombs with aerodynamic wings and explosive payloads. With the navigational aid of the 11th century compass and ability to steer at high sea with the 1st century sternpost rudder, premodern Chinese sailors sailed as far as East Africa.^[2][3][4] In water-powered clockworks, the premodern Chinese had used the escapement mechanism since the 8th century and the endless power-transmitting chain drive in the 11th century. They also made large mechanical puppet theatres driven by waterwheels and carriage wheels and wine-serving automatons driven by paddle wheel boats.

History of science and technology in China
Inventions Four Great Inventions Discoveries
By subject
Mathematics Astronomy Calendar Units of measurement Cartography Printing Ceramics Metallurgy Coinage Chinese Alchemy Traditional medicine herbology Agriculture Sericulture Silk industry Architecture Classic gardens Bridges Transport Navigation Military Navy
By era
Han Tang Song People's Republic Agriculture

The contemporaneous Peiligang and Pengtoushan cultures represent the oldest Neolithic cultures of China and were formed around 7000 BC.^[5] Some of the first inventions of Neolithic China include semilunar and rectangular stone knives, stone hoes and spades, the cultivation of millet, rice, and the soybean, the refinement of sericulture, the building of rammed earth structures with lime-plastered house floors, the creation of pottery with cord-mat-basket designs, the creation of pottery tripods and pottery steamers and the development of ceremonial vessels and scapulimancy for purposes of divination.^[6][7] Francesca Bray argues that the domestication of the ox and buffalo during the Longshan culture (c. 3000–c. 2000 BC) period, the absence of Longshan-era irrigation or high-yield crops, full evidence of Longshan cultivation of dry-land cereal crops which gave high yields "only when the soil was carefully cultivated," suggest that the plough was known at least by the Longshan culture period and explains the high agricultural production yields which allowed the rise of Chinese civilisation during the Shang Dynasty (c. 1600–c. 1050 BC).^[8] With later inventions such as the multiple-tube seed drill and heavy moldboard iron plough, China's agricultural output could sustain a much larger population.

For the purposes of this list, inventions are regarded as technological firsts developed in China, and as such does not include foreign technologies which the Chinese acquired through contact, such as the windmill from the Middle East or the telescope from early modern Europe. It also does not include technologies developed elsewhere and later invented separately by the Chinese, such as the odometer and chain pump. Scientific, mathematical or natural discoveries, changes in minor concepts of design or style and artistic innovations do not appear on the list.

Four Great Inventions

The following is a list of the Four Great Inventions—as designated by Joseph Needham (1900–1995),^[9] a sinologist known for his research on the history of Chinese science—in the chronological order that they were established in China.

Fragments of hemp wrapping paper dated to the reign of Emperor Wu of Han (141–87 BC)

The Diamond Sutra, the oldest printed book, published in AD 868 during the Tang Dynasty (618–907)

Paper

This sub-section is about paper making; for the writing material first used in ancient Egypt, see papyrus.

Although it is recorded that the Han Dynasty (202 BC – AD 220) court eunuch Cai Lun (50 AD – AD 121) invented the pulp papermaking process and established the use of new materials used in making paper, ancient padding and wrapping paper artifacts dating to the 2nd century BC have been found in China, the oldest example of pulp papermaking being a map from Fangmatan, Tianshui;^[10] by the 3rd century, paper as a writing medium was in widespread use, replacing traditional but more expensive writing mediums such as strips of bamboo rolled into threaded scrolls, strips of silk, wet clay tablets hardened later in a furnace, and wooden tablets.^{[11][12][13][14][15]} The earliest known piece of paper with writing on it was discovered in the ruins of a Chinese watchtower at Tsakhortei, Alxa League, where Han Dynasty troops had deserted their position in AD 110 following a Xiongnu attack.^[16] In the paper making process established by Cai in 105, a boiled mixture of mulberry tree bark, hemp, old linens and fish nets created a pulp that was pounded into paste and stirred with water; a wooden frame sieve with a mat of sewn reeds was then dunked into the mixture, which was then shaken and then dried into sheets of paper that were bleached under the exposure of sunlight; K.S. Tom says this process was gradually improved through leaching, polishing and glazing to produce a smooth, strong paper. Paper is used a lot.^[13][14]

Printing

For the separate invention of movable type printing in medieval Europe, see printing press and Johannes Gutenberg.

Woodblock printing: The earliest specimen of woodblock printing is a single-sheet dharani sutra in Sanskrit that was printed on hemp paper between 650 and 670 AD; it was unearthed in 1974 from a Tang tomb near Xi'an.^[17] A Korean miniature dharani Buddhist sutra discovered in 1966, bearing extinct Chinese writing characters used only during the reign of China's only self-ruling empress, Wu Zetian (r.690–705), is dated no earlier than 704 and preserved in a Silla Korean temple stupa built in 751.^[18] The first printed periodical, the Kaiyuan Za Bao was made available in AD 713. However, the earliest known book printed at regular size is the Diamond Sutra made during the Tang Dynasty (618–907), a 5.18 m (17 ft) long scroll which bears the date 868 AD.^[19] Joseph Needham and Tsien Tsuen-hsuin write that the cutting and printing techniques used for the delicate calligraphy of the Diamond Sutra book are much more advanced and refined than the miniature dharani sutra printed earlier.^[19]

An illustration published in Wang Zhen's (fl. 1290–1333) book of AD 1313 showing movable type characters arranged by rhyme scheme in round table compartments

Movable type: The polymath scientist and official Shen Kuo (1031–1095) of the Song Dynasty (960–1279) was the first to describe the process of movable type printing in his Dream Pool Essays of 1088. He attributed the innovation of reusable fired clay characters to a little-known artisan named Bi Sheng (990–1051).^{[20][21][22][23]} Bi had experimented with wooden type characters, but their use was not perfected until 1297 to 1298 with the model of the official Wang Zhen (fl. 1290–1333) of the Yuan Dynasty (1271–1368), who also arranged written characters by rhyme scheme on the surface of round table compartments.^[21][24] It was not until 1490 with the printed works of Hua Sui (1439–1513) of the Ming Dynasty (1368–1644) that the Chinese perfected metal movable type characters, namely bronze.^[25][26] The Qing Dynasty (1644–1912) scholar Xu Zhiding of Tai'an, Shandong developed vitreous enamel movable type printing in 1718.^[27]

Gunpowder

The earliest artistic depiction of a fire lance gunpowder weapon, a painting at Dunhuang, dated Five Dynasties and Ten Kingdoms period (907–960 AD)

Evidence of gunpowder's first use in China comes from the Tang dynasty (618–907).^[28] The earliest known recorded recipes for gunpowder were written by Zeng Gongliang, Ding Du and Yang Weide in the Wujing Zongyao, a military manuscript compiled in 1044 during the Song Dynasty (960–1279). Its gunpowder formulas describe the use of incendiary bombs launched from catapults, thrown down from defensive walls, or lowered down the wall by use of iron chains operated by a swape lever.^[29][30][31] Bombs launched from trebuchet catapults mounted on forecastles of naval ships ensured the victory of Song over Jin forces at the Battle of Caishi in 1161, while the Mongol Yuan Dynasty (1271–1368) used gunpowder bombs during their failed invasion of Japan in 1274 and 1281.^[30] During the 13th and 14th centuries, gunpowder formulas became more potent (with nitrate levels of up to 91%) and gunpowder weaponry more advanced and deadly, as evidenced in the Ming Dynasty (1368–1644) military manuscript Huolongjing compiled by Jiao Yu (fl. 14th to early 15th century) and Liu Bowen (1311–1375). It was completed in 1412, a long while after Liu's death, with a preface added by the Jiao in its Nanyang publication.^[32]

Compass

A model in Kaifeng of a Chinese ladle-and-bowl type compass used for geomancy in the Han Dynasty (202 BC – 220 AD); the historical authenticity of the model has been questioned by Li Shu-hua (1954).^[33]

Although an ancient hematite artifact from the Olmec era in Mexico dating to roughly 1000 BC indicates the possible use of the lodestone compass long before it was described in China, the Olmecs did not have iron which the Chinese would discover could be magnetised by contact with lodestone.^[34] Descriptions of lodestone attracting iron were made in the Guanzi, Master Lu's Spring and Autumn Annals and Huainanzi.^[35][36][37] The Chinese by the Han Dynasty (202 BC – 220 AD) began using north-south oriented lodestone ladle-and-bowl shaped compasses for divination and geomancy and not yet for navigation.^[38][39][40] The Lunheng, written by Wang Chong (27 – c. 100 AD) stated in chapter 52: "This instrument resembles a spoon and when it is placed on a plate on the ground, the handle points to the south".^[41][42] There are, however, another two references under chapter 47 of the same text to the attractive power of a magnet according to Needham (1986),^[43] but Li Shu-hua (1954) considers it to be lodestone, and states that there is no explicit mention of a magnet in Lunheng.^[33] Shen Kuo (1031–1095) of the Song Dynasty (960–1279) was the first to accurately describe both magnetic declination (in discerning true north) and the magnetic needle compass in his Dream Pool Essays of 1088, while the author Zhu Yu (fl. 12th century) was the first to mention use of the compass specifically for navigation at sea in his book published in 1119.^{[22][39][44][45][46][47][48]} Even before this, however, the Wujing Zongyao military manuscript compiled by 1044 described a thermoremanence compass of heated iron or steel shaped as a fish and placed in a bowl of water which produced a weak magnetic force via remanence and induction; the Wujing Zongyao recorded that it was used as a pathfinder along with the mechanical south-pointing chariot.^[49][50]

Pre-Shang

Inventions which originated in what is now China during the Neolithic age and prehistoric Bronze Age are listed in alphabetical order below.

A bronze ritual bell, Zhou Dynasty, 10th to 9th century BC

• Alcoholic beverage and the process of fermentation: The earliest archaeological evidence of the consumption of alcoholic beverages was discovered in neolithic China dating from 7000–6600 BC. Examination and analysis of ancient pottery jars from the neolithic village of Jiahu in Henan province in northern China revealed residue left behind by the alcoholic beverages they once contained. According to a study published in the Proceedings of the National Academy of Sciences, chemical analysis of the residue revealed that the fermented drink was made from fruit, rice and honey.^[51][52] Elsewhere in the world, fermented beverages have been found dating from 6000 BC in Georgia,^[53] 3150 BC in ancient Egypt,^[54] 3000 BC in Babylon,^[55] 2000 BC in pre-Hispanic Mexico,^[55] and 1500 BC in Sudan.^[56]
• Bell: Clapper-bells made of pottery have been found in several archaeological sites.^[57] The earliest metal bells, with one found in the Taosi site, and four in the Erlitou site, dated to about 2000 BC, may have been derived from the earlier pottery prototype.^[58] Early bells not only have an important role in generating metal sound, but arguably played a prominent cultural role. With the emergence of other kinds of bells during the Shang Dynasty (c. 1600 – c. 1050 BC), they were relegated to subservient functions; at Shang and Zhou sites, they are also found as part of the horse-and-chariot gear and as collar-bells of dogs.^[59]
• Coffin, wooden: The earliest evidence of wooden coffin remains, dated at 5000 BC, was found in the Tomb 4 at Beishouling, Shaanxi. Clear evidence of a wooden coffin in the form of a rectangular shape was found in Tomb 152 in an early Banpo site. The Banpo coffin belongs to a four-year-old girl, measuring 1.4 m (4.5 ft) by 0.55 m (1.8 ft) and 3–9 cm thick. As many as 10 wooden coffins have been found from the Dawenkou culture (4100–2600 BC) site at Chengzi, Shandong.^[60][61] The thickness of the coffin, as determined by the number of timber frames in its composition, also emphasized the level of nobility, as mentioned in the Classic of Rites,^[62] Xunzi^[63] and Zhuangzi.^[64] Examples of this have been found in several Neolithic sites; the double coffin, the earliest of which was found in the Liangzhu culture (3400–2250 BC) site at Puanqiao, Zhejiang, consists of an outer and an inner coffin, while the triple coffin, with its earliest finds from the Longshan culture (3000–2000 BC) sites at Xizhufeng and Yinjiacheng in Shandong, consists of two outer and one inner coffins.^[65]

A bronze dagger-axe from the State of Han, Warring States period (403–221 BC); this type of weapon has existed in China since the Neolithic period

Chinese rice wine containers

• Cookware and pottery vessel: The earliest pottery, used as vessels, was discovered in 2012, found in Xianrendong Cave located in the Jiangxi province of China.^[66] The pottery dates to 20,000 to 19,000 BP.^[67][68] The vessels may have been used as cookware, manufactured by hunter-gatherers.^[68] Harvard University archaeologist Ofer Bar-Yosef reported that "When you look at the pots, you can see that they were in a fire."^[69]
• Dagger-axe: The dagger-axe or ge was developed from agricultural stone implement during the Neolithic, dagger-axe made of stone are found in the Longshan culture (3000–2000 BC) site at Miaodian, Henan. It also appeared as ceremonial and symbolic jade weapon at around the same time, two being dated from about 2500 BC, are found at the Lingjiatan site in Anhui.^[70] The first bronze ge appeared at the early Bronze Age Erlitou site,^[70] where two were being found among the over 200 bronze artifacts (as of 2002) at the site,^[71] three jade ge were also discovered from the same site.^[72] Total of 72 bronze ge in Tomb 1004 at Houjiazhuang, Anyang,^[73] 39 jade ge in tomb of Fu Hao and over 50 jade ge at Jinsha site were found alone.^[70] It was the basic weapon of Shang (c. 1600 – 1050 BC) and Zhou (c.1050–256 BC) infantry, although it was sometimes used by the "striker" of charioteer crews. It consisted of a long wooden shaft with a bronze knife blade attached at a right angle to the end. The weapon could be swung down or inward in order to hook or slash, respectively, at an enemy.^[74] By the early Han Dynasty (202 BC – 220 AD), military use of the bronze ge had become limited (mostly ceremonial); they were slowly phased out during the Han Dynasty by iron spears and iron ji halberds.^[75]
• Lacquer: Lacquer was used in China since the Neolithic period and came from a substance extracted from the lac tree found in China.^[76] A red wooden bowl, which is believed to be the earliest known lacquer container,^[77] was unearthed at a Hemudu (c. 5000 BC – c. 4500 BC) site.^[78] Michael Loewe says coffins at many early Bronze Age sites seem to have been lacquered, and articles of lacquered wood may also have been common, but the earliest well-preserved examples of lacquer come from Eastern Zhou Dynasty (771 – 256 BC) sites.^[79] However, Wang Zhongshu disagrees, stating that the oldest well-preserved lacquerware items come from a Xiajiadian (c.2000 – c.1600 BC) site in Liaoning excavated in 1977, the items being red lacquered vessels in the shape of Shang Dynasty bronze gu vessels.^[78] Wang states that many lacquerware items from the Shang Dynasty (c.1600 – c.1050 BC), such as fragments of boxes and basins, were found, and had black designs such as the Chinese dragon and taotie over a red background.^[78] Queen Fu Hao (died c. 1200 BC) was buried in a lacquered wooden coffin.^[80] There were three imperial workshops during the Han Dynasty (202 BC – 220 AD) established solely for the purpose of crafting lacquerwares; fortunately for the historian, Han lacquerware items were inscribed with the location of the workshop where they were produced and the date they were made, such as a lacquerware beaker found in the Han colony in northwestern Korea with the inscription stating it was made in a workshop near Chengdu, Sichuan and dated precisely to 55 AD.^[81]

Lamian noodles, similar to the 4,000-year-old noodles made from millet found at Lajia

• Millet cultivation: The discovery in northern China of domesticated varieties of broomcorn and foxtail millet from 8500 BC, or earlier, suggests that millet cultivation might have predated that of rice in parts of Asia.^[82] Clear evidence of millet began to cultivate by 6500 BC at sites of Cishan, Peiligang and Jiahu.^[83] Archaeological remains from Cishan sum up to over 300 storage pits, 80 with millet remains, with a total millet storage capacity estimated for the site of about 100,000 kg of grain.^[84] By 4000 BC, most Yangshao areas were using an intensive form of foxtail millet cultivation, complete with storage pits and finely prepared tools for digging and harvesting the crop. The success of the early Chinese millet farmers is still reflected today in the DNA of many east Asian populations, such studies have shown that the ancestors of those farmers probably arrived in the area between 30,000 and 20,000 BP, and their bacterial haplotypes are still found in today populations throughout eastern Asia.^[85]
• Noodle: In 2002,^[86] an archaeological excavation at the Lajia site of the Qijia culture (2400–1900 BC) revealed 4,000-year-old noodles made of millet (instead of traditional wheat flour) preserved by an upturned earthenware bowl that had created an airtight space between it and the sediment it was found on; the noodles resemble the traditional lamian noodle of China, which is made by "repeatedly pulling and stretching the dough by hand," according to a BBC News report on the find.^[87]
• Rowing oar: Rowing oars have been used since the early Neothilic period; a canoe-shaped pottery and six wooden oars dating from the 6000 BC have been discovered in a Hemudu culture site at Yuyao, Zhejiang.^[88][89] In 1999, an oar measuring 63.4 cm (2 ft) in length, dating from 4000 BC, has also been unearthed at Ishikawa Prefecture, Japan.^[90]
• Plastromancy: The earliest use of turtle shells comes from the archaeological site in Jiahu site. The shells, containing small pebbles of various size, colour and quantity, were drilled with small holes, suggesting that each pair of them was tied together originally. Similar finds have also been found in the Dawenkou burial sites of about 4000–3000 BC, as well as in Henan, Sichuan, Jiangsu and Shaanxi.^[91] The turtle-shell shakers for the most part are made of the shell of land turtles,^[92] identified as Cuora flavomarginata.^[93] Archaeologists believe that these shells were used either as rattles in ceremonial dances, shamantic healing tools or ritual paraphernalia for divinational purposes.^[94]
• Ploughshare, triangular-shaped: Triangular-shaped stone ploughshares are found at the sites of Majiabang culture dated to 3500 BC around Lake Tai. Ploughshares have also been discovered at the nearby Liangzhu and Maqiao sites roughly dated to the same period. David R. Harris says this indicates that more intensive cultivation in fixed, probably bunded, fields had developed by this time. According to Mu Yongkang and Song Zhaolin's classification and methods of use, the triangular plough assumed many kinds and were the departure from the Hemudu and Luojiajiao spade, with the Songze small plough in mid-process. The post-Liangzhu ploughs used draft animals.^[95][96]

Rice terrace farming in Longji, Guangxi, China

• Rammed earth: The archaeological evidence of the use of rammed earth has been discovered in Neolithic archaeological sites of the Yangshao and Longshan cultures along the Yellow River in China, dating back to 5000 BC. By 2000 BC, rammed-earth architectural techniques were commonly used for walls and foundations in China.^[97]
• Pottery steamer: Archaeological excavations show that using steam to cook began with the pottery cooking vessels known as yan steamers; a yan composed of two vessel, a zeng with perforated floor surmounted on a pot or caldron with a tripod base and a top cover. The earliest yan steamer dating from about 5000 BC was unearthed in the Banpo site.^[98] In the lower Yangzi River, zeng pots first appeared in the Hemudu culture (5000–4500 BC) and Liangzhu culture (3200–2000 BC) and used to steam rice; there are also yan steamers unearthed in several Liangzhu sites, including 3 found at the Chuodun and Luodun sites in southern Jiangsu.^[99] In the Longshan culture (3000–2000 BC) site at Tianwang in western Shandong, 3 large yan steamers were discovered.^[100]
• Pottery urn: The first evidence of pottery urn dating from about 7000 BC comes from the early Jiahu site, where a total of 32 burial urns are found,^[101] another early finds are in Laoguantai, Shaanxi.^[65] There are about 700 burial urns unearthed over the Yangshao (5000–3000 BC) areas and consisting more than 50 varieties of form and shape. The burial urns were used mainly for children, but also sporadically for adults, as shown in the finds at Yichuan, Lushan and Zhengzhou in Henan.^[60] A secondary burials containing bones from child or adult are found in the urns in Hongshanmiao, Henan.^[102] Small hole was drilled in most of the child and adult burial urns, and is believed to enable the spirit to access.^[103] It is recorded in the Classic of Rites that the earthenware coffins were used in the time of legendary period,^[104] the tradition of burying in pottery urns lasted until the Han Dynasty (202 BC–220 AD) when it gradually disappeared.^[65]

A basin cover for a "coffin urn" from the Neolithic Yangshao culture (c. 5000 – c. 3000 BC), used for the burial of a child, from Shaanxi

• Rice cultivation: In 2002, a Chinese and Japanese group reported the discovery in eastern China of fossilised phytoliths of domesticated rice apparently dating back to 11,900 BC or earlier. However, phytolith data are controversial in some quarters due to potential contamination problems.^[105] It is likely that demonstrated rice was cultivated in the middle Yangtze Valley by 7000 BC, as shown in finds from the Pengtoushan culture at Bashidang, Changde, Hunan. By 5000 BC, rice had been domesticated at Hemudu culture near the Yangtze Delta and was being cooked in pots.^[106] Although millet remained the main crop in northern China throughout history, several sporadic attempts were made by the state to introduce rice around the Bohai Gulf as early as the 1st century.^[107]
• Sericulture: Sericulture is the production of silk from silkworms. The oldest silk found in China comes from the Chinese Neolithic period and is dated to about 3630 BC, found in Henan province.^[108] Silk items excavated from the Liangzhu culture site at Qianshanyang, Wuxing District, Zhejiang date to roughly 2570 BC, and include silk threads, a braided silk belt and a piece of woven silk.^[108] A bronze fragment found at the Shang Dynasty (c. 1600 – c. 1050 BC) site at Anyang (or Yinxu) contains the first known written reference to silk.^[109]
• Soybean cultivation: The cultivation of soybeans began in the eastern half of northern China by 2000 BC, but is almost certainly much older.^[110] Liu et al. (1997) stated that soybean originated in China and was domesticated about 3500 BC.^[111] By the 5th century, soybeans were being cultivated in much of eastern Asia, but the crop did not move beyond this region until well into the 20th century.^[112] Written records of the cultivation and use of the soybean in China date back at least as far as the Western Zhou Dynasty.^[113]
• Treetrunk coffin: The treetrunk coffin, single trunk coffin or boat coffin was one of the common burials found mainly in the southern China. One of the few earliest boat coffins are found among the 92 burial tombs in the Songze culture (4000–3000 BC) site at Jiaxing, Zhejiang, similar finds can also be found in the middle phase of Dawenkou culture (4100–2600 BC) sites.^[65]
• Wet field cultivation and Paddy field: Wet field cultivation, or the paddy field, was developed in China. The earliest paddy field dates to 6280 BP, based on carbon dating of the grains of rice and soil organic matter found at the Chaodun site in Kushan County.^[114] Paddy fields have also been excavated by archaeologists at Caoxieshan, a site of the Neolithic Majiabang culture.^[115]

Shang and later

Inventions which made their first appearance in China after the Neolithic age, specifically during and after the Shang Dynasty (c. 1600–1050 BC), are listed in alphabetical order below.

A

Bronze mirror of the Sui Dynasty (581–618) showing the twelve divisions of the Chinese zodiac, the latter of which goes back to the Warring States period (403–221 BC) in China

• Acupuncture: Acupuncture, the traditional Chinese medicinal practice of inserting needles into specific points of the body for therapeutic purposes and relieving pain, was first mentioned in the Huangdi Neijing compiled from the 3rd to 2nd centuries BC (Warring States period to Han Dynasty).^[116] The oldest known acupuncture sticks made of gold, found in the tomb of Liu Sheng (d. 113 BC), date to the Western Han (203 BC – 9 AD); the oldest known stone-carved depiction of acupuncture was made during the Eastern Han (25–220 AD); the oldest known bronze statue of an acupuncture mannequin dates to 1027 during the Song Dynasty (960–1279).^[117]
• Animal zodiac: The earliest and most complete version of the animal zodiac mentions twelve animals which differ slightly from the modern version (for instance, the Dragon is absent, represented by a worm).^[118] Each animal matches the Earthly Branches and were written on bamboo slips from Shuihudi, dated to the late 4th century BC,^[119] as well as from Fangmatan, dating to the late 3rd century BC.^[119] Before these archaeological finds, the Lunheng written by Wang Chong (27 – c. 100 AD) during the 1st century provided the earliest transmitted example of a complete duodenary animal cycle.^[120]
• Armillary sphere, hydraulic-powered: Hipparchus (c. 190 – c. 120 BC)^[121] (probably in Geographica from the 1st century AD)^[122] credited the Greek Eratosthenes (276–194 BC) as the first to invent the armillary sphere representing the celestial sphere. However, the Chinese astronomer Geng Shouchang of the Han Dynasty (202 BC – 220 AD) invented it separately in China in 52 BC, while the polymath Zhang Heng (78–139 AD) was the first to apply motive power to the rotating armillary sphere by a set of complex gears rotated by a waterwheel which in turn was powered by the constant pressure head of an inflow clepsydra clock, the latter of which he improved with an extra compensating tank between the reservoir and the inflow vessel.^{[123][124][125][126][127]}

B

Huizi currency, issued in 1160

Bellows operated by waterwheels, from a book published by Wang Zhen in 1313, Yuan Dynasty

The Spinning Wheel, by Northern Song (960–1127) artist Wang Juzheng. The Chinese invented the belt drive by the 1st century BC for silk quilling devices.^[128]

A print illustration from an encyclopedia published in 1637 by Song Yingxing (1587–1666), showing two men working a blast furnace on the right and the puddling process on the left.

• Banknote: Paper currency was first developed in China. Its roots were in merchant receipts of deposit during the Tang Dynasty (618–907), as merchants and wholesalers desired to avoid the heavy bulk of copper coinage in large commercial transactions.^{[129][130][131]} During the Song Dynasty (960–1279), the central government adopted this system for their monopolized salt industry, but a gradual reduction in copper production—due to closed mines and an enormous outflow of Song-minted copper currency into the Japanese, Southeast Asian, Western Xia and Liao Dynasty economies—encouraged the Song government in the early 12th century to issue government-printed paper currency alongside copper to ease the demand on their state mints and debase the value of copper.^[132] In the early 11th century, the Song Dynasty government authorised sixteen private banks to issue notes of exchange in Sichuan, but in 1023 the government commandeered this enterprise and set up an agency to supervise the manufacture of banknotes there. The earliest paper currency was limited to certain regions and could not be used outside specified bounds, but once paper was securely backed by gold and silver stores, the Song Dynasty government initiated a nationwide paper currency, between 1265 and 1274.^[131] The concurrent Jin Dynasty (1115–1234) also printed paper banknotes by at least 1214.^[133]
• Bellows, hydraulic-powered: Although it is unknown if metallurgic bellows (i.e. air-blowing device) in the Han Dynasty (202 BC – 220 AD) were of the leather bag type or the wooden fan type found in the later Yuan Dynasty (1279–1368), the Eastern Han official Du Shi (d. 38 AD) applied the use of rotating waterwheels to power the bellows of his blast furnace smelting iron, a method which continued in use in China thereafter, as evidenced by subsequent records; it is a significant invention in that iron production yields were increased and it employed all the necessary components for converting rotary motion into reciprocating motion.^{[127][134][135][136][137]}
• Belt drive: The mechanical belt drive, using a pulley machine, was first mentioned in the text the Dictionary of Local Expressions by the Han Dynasty author Yang Xiong (53–18 BC) in 15 BC, used for a quilling machine that wound silk fibers on to bobbins for weavers' shuttles.^[128] The belt drive is an essential component to the invention of the spinning wheel.^[138][139] The belt drive was not only used in textile technologies, it was also applied to hydraulic powered bellows dated from the 1st century AD.^[138]
• Belt hook: The belt hook was a fastener used in China. Belt hooks date to the 7th century BC in China,^[140] and were made with bronze, iron, gold, and jade.^[140] Texts claim that the belt hook arrived in China from Central Asia during the Warring States period, but archaeological evidence of belt hooks in China predate the Warring States Period.^[141]
• Blast furnace: Although cast iron tools and weapons have been found in China dating to the 5th century BC, the earliest discovered Chinese blast furnaces, which produced pig iron that could be remelted and refined as cast iron in the cupola furnace, date to the 3rd and 2nd centuries BC, while the vast majority of early blast furnace sites discovered date to the Han Dynasty (202 BC – 220 AD) period immediately following 117 BC with the establishment of state monopolies over the salt and iron industries during the reign of Emperor Wu of Han (r. 141 – 87 BC); most ironwork sites discovered dating before 117 BC acted merely as foundries which made castings for iron that had been smelted in blast furnaces elsewhere in remote areas far from population centres.^[142][143]
• Bomb, cast iron: The first accounts of bombs made of cast iron shells packed with explosive gunpowder—as opposed to earlier types of casings—were written in the 13th century in China.^[144] The term was coined for this bomb (i.e. "thunder-crash bomb") during a Jin Dynasty (1115–1234) naval battle of 1231 against the Mongols.^[145] The History of Jin (compiled by 1345) states that in 1232, as the Mongol general Subutai (1176–1248) descended on the Jin stronghold of Kaifeng, the defenders had a "thunder-crash bomb" which "consisted of gunpowder put into an iron container ... then when the fuse was lit (and the projectile shot off) there was a great explosion the noise whereof was like thunder, audible for more than a hundred li, and the vegetation was scorched and blasted by the heat over an area of more than half a mou. When hit, even iron armour was quite pierced through."^[145] The Song Dynasty (960–1279) official Li Zengbo wrote in 1257 that arsenals should have several hundred thousand iron bomb shells available and that when he was in Jingzhou, about one to two thousand were produced each month for dispatch of ten to twenty thousand at a time to Xiangyang and Yingzhou.^[146] The significance of this, as Joseph Needham states, is that a "high-nitrate gunpowder mixture had been reached at last, since nothing less would have burst the iron casing."^[147]
• Borehole drilling: By at least the Han Dynasty (202 BC – 220 AD), the Chinese used deep borehole drilling for mining and other projects; Loewe states that borehole sites could reach as deep as 600 m (2000 ft).^[148] K.S. Tom describes the drilling process: "The Chinese method of deep drilling was accomplished by a team of men jumping on and off a beam to impact the drilling bit while the boring tool was rotated by buffalo and oxen."^[149] This was the same method used for extracting petroleum in California during the 1860s (i.e. "Kicking Her Down").^[149] A Western Han Dynasty bronze foundry discovered in Xinglong, Hebei had nearby mining shafts which reached depths of 100 m (328 ft) with spacious mining areas; the shafts and rooms were complete with a timber frame, ladders and iron tools.^[150][151] (For further information, see the entry on "natural gas as fuel" below.)
• Bristle toothbrush: According to a Library of Congress website, the Chinese have used the bristle toothbrush since 1498, during the reign of the Hongzhi Emperor (r. 1487–1505) of the Ming Dynasty (1368–1644); it also adds that the toothbrush was not mass-produced until 1780, when they were sold by a William Addis of Clerkenwell, London, England.^[152] In accordance with the Library of Congress website, scholar John Bowman also writes that the bristle toothbrush using pig bristles was invented in China during the 1490s.^[26] While Bonnie L. Kendall agrees with this, she noted that a predecessor existed in ancient Egypt in the form of a twig that was frayed at the end.^[153]

Chinese river ships from Along the River During Qingming Festival, by Zhang Zeduan (1085–1145), Song Dynasty

• Bulkhead partition: The 5th century book Garden of Strange Things by Liu Jingshu mentioned that a ship could allow water to enter the bottom without sinking, while the Song Dynasty author Zhu Yu (fl. 12th century) wrote in his book of 1119 that the hulls of Chinese ships had a bulkhead build; these pieces of literary evidence for bulkhead partitions are confirmed by archaeological evidence of a 24 m (78 ft) long Song Dynasty ship dredged from the waters off the southern coast of China in 1973, the hull of the ship divided into twelve walled compartmental sections built watertight, dated to about 1277.^[154][155] Western writers from Marco Polo (1254–1324), to Niccolò Da Conti (1395–1469), to Benjamin Franklin (1706–1790) commented on bulkhead partitions, which they viewed as an original aspect of Chinese shipbuilding, as Western shipbuilding did not incorporate this hull arrangement until the early 19th century.^[156][157]

C

Wooden and plastic chopsticks

The Xuande Emperor (r. 1425–1435) playing chuiwan with his eunuchs

A hand-held, trigger-operated crossbow from the 2nd century BC, Han Dynasty^[158]

A 15th-century Ming Dynasty (1368–1644) woodblock print of the Water Margin novel showing a game of cuju football being played

An earthenware model of a stove furnace from the Eastern Han Dynasty (25–220 AD); the Chinese have been using the cupola furnace since antiquity.

• Cast iron: Confirmed by archaeological evidence, cast iron, made from melting pig iron, was developed in China by the early 5th century BC during the Zhou Dynasty (1122–256 BC), the oldest specimens found in a tomb of Luhe County in Jiangsu province; despite this, most of the early blast furnaces and cupola furnaces discovered in China date after the state iron monopoly under Emperor Wu (r. 141–87 BC) was established in 117 BC, during the Han Dynasty (202 BC – 220 AD); Donald Wagner states that a possible reason why no ancient Chinese bloomery process has been discovered thus far is because the iron monopoly, which lasted until the 1st century AD when it was abolished for private entrepreneurship and local administrative use, wiped out any need for continuing the less-efficient bloomery process that continued in use in other parts of the world.^{[142][159][160][161][162]} Wagner states that most iron tools in ancient China were made of cast iron in consideration of the low economic burden of producing cast iron, whereas most iron military weapons were made of more costly wrought iron and steel, signifying that "high performance was essential" and preferred for the latter.^[163]
• Celadon: Named after a pale-tinted spring green colour, Wang Zhongshu (1982) asserts that shards having this type of ceramic glaze have been recovered from Eastern Han Dynasty (25–220 AD) tomb excavations in Zhejiang; he also asserts that this type of ceramic became well known during the Three Kingdoms (220–265).^[164] Richard Dewar (2002) disagrees with Wang's classification, stating that true celadon—which requires a minimum 1260 °C (2300 °F) furnace temperature, a preferred range of 1285° to 1305 °C (2345° to 2381 °F), and reduced firing—was not created until the beginning of the Northern Song Dynasty (960–1127).^[165] The unique grey or green celadon glaze is a result of iron oxide's transformation from ferric to ferrous iron (Fe₂O₃ → FeO) during the firing process.^[165] Longquan celadon wares, which Nigel Wood (1999) writes were first made during the Northern Song, had bluish, blue-green, and olive green glazes and high silica and alkali contents which resembled later porcelain wares made at Jingdezhen and Dehua rather than stonewares.^[166]
• Chain drive, endless power-transmitting: The Greek Philon of Byzantium (3rd or 2nd century BC)^[167] described a chain drive and windlass used in the operation of a polybolos (a repeating ballista),^[168][169] "but the chain drive did not continuously transmit power from shaft to shaft and hence they were not in the direct line of ancestry of the chain-drive proper".^[170] A continuously driven chain drive first appeared in 11th century China. Perhaps inspired by chain pumps which had been known in China since at least the Han Dynasty (202 BC – 220 AD) when they were mentioned by the Chinese philosopher Wang Chong (27 – c. 100 AD),^[171] the endless power-transmitting chain drive was first used in the gearing of the clock tower built at Kaifeng in 1090 by the official, mathematician and astronomer Su Song (1020–1101).^{[172][173][174]}
• Chain stitch: The earliest archaeological evidence of chain stitch embroidery dates from 1100 BC in China. Excavated from royal tombs, the embroidery was made using threads of silk.^[175] Chain stitch embroidery has also been found dating to the Warring States period. Chain stitch designs spread to Iran through the Silk Road.^[176]
• Chopsticks: The historian Sima Qian (145–86 BC) wrote in the Records of the Grand Historian that King Zhou of Shang was the first to make chopsticks out of ivory in the 11th century BC; the most ancient archaeological find of a pair of chopsticks, made of bronze, comes from Shang Tomb 1005 at Houjiazhuang, Anyang, dated roughly 1200 BC. By 600 BC, the use of chopsticks had spread to Yunnan (Dapona in Dali),^[177][178] and Töv Province by the 1st century.^[179] The earliest known textual reference to the use of chopsticks comes from the Han Feizi, a philosophical text written by Han Fei (c. 280–233 BC) in the 3rd century BC.^[180]
• Chromium, use of: The use of chromium was invented in China no later than 210 BC when the Terracotta Army was interred at a site not far from modern Xi'an; modern archaeologists discovered that bronze-tipped crossbow bolts at the site showed no sign of corrosion after more than 2,000 years, because they had been coated in chromium. Chromium was not used anywhere else until the experiments of Louis Nicolas Vauquelin (1763–1829) in 1797–1798.^[181]
• Chuiwan: Chuiwan, a game similar to the Scottish-derived sport of golf, was first mentioned in China by Wei Tai (fl. 1050–1100) in his Dongxuan Records (東軒錄);^[182] it was popular amongst men and women in the Song Dynasty (960–1279) and Yuan Dynasty (1279–1368), while it was popular among urban men in the Ming Dynasty (1368–1644) in much the same way that tennis was for urban Europeans during the Renaissance (according to Andrew Leibs).^[183] In 1282, Ning Zhi published the Book of Chuiwan, which described the rules, equipment, and playing field of chuiwan, as well as included commentary of those who mastered its tactics.^[183] The game was played on flat and sloping grassland terrain and—much like the tee of modern golf—had a "base" area where the first of three strokes were played.^[184]
• Churn drill: Churn drills date back to as early as Qin Dynasty China, 221 BC,^[185] capable of reaching a depth of 1500 m.^[186] Churn drills in ancient China were built of wood and labour-intensive, but were able to go through solid rock.^[187] The churn drill appears in Europe during the 12th century.^[186] A churn drill using steam power, based on "the ancient Chinese method of lifting and dropping a rod tipped with a bit," was first built in 1835 by Isaac Singer in the United States.^[188]
• Civil service examinations: In the Han Dynasty (202 BC – 220 AD), the xiaolian system of recruiting government officials through formal recommendations was the chief method of filling bureaucratic posts, although there was an Imperial Academy to train potential candidates for office and some offices required its candidates to pass formal written tests before appointment.^{[189][190][191][192]} However, it was not until the Sui Dynasty (581–618) that civil service examinations became open to all adult males not belonging to the merchant class (although having wealth or noble status were not requirements) and were used as a universal prerequisite for appointments to office, at least in theory.^[193][194] The civil service system was implemented on a much larger scale during the Song Dynasty (960–1279), when an elite core of dynastic-founding and professional families lost their majority in government to a broad strata of lesser gentry families from throughout the country.^[195][196]
• Co-fusion steel process: Although Joseph Needham speculates that it could have existed beforehand, the first clear written evidence of the fusion of wrought iron and cast iron to make steel comes from the 6th century AD in regards to the Daoist swordsmith Qiwu Huaiwen, who was put in charge of the arsenal of Northern Wei general Gao Huan from 543 to 550 AD.^[197] The Tang Dynasty (618–907) Newly Reorganized Pharmacopoeia of 659 also described this process of mixing and heating wrought iron and cast iron together, stating that the steel product was used to make sickles and Chinese sabers. In regards to the latter text, Su Song (1020–1101) made a similar description and noted the steel's use for making swords.
• Coke as fuel: By the 11th century, during the Song Dynasty (960–1279), the demands for charcoal used in the blast and cupola furnaces of the iron industry led to large amounts of deforestation of prime timberland; to avoid excessive deforestation, the Song Chinese began using coke made from bituminous coal as fuel for their metallurgic furnaces instead of charcoal derived from wood.^{[198][199][200]}
• Color printing: By at least the Yuan Dyansty, China had invented color printing for paper. Michael Sullivan writes that "the earliest color printing known in China, and indeed in the whole world, is a two-color frontispiece to a Buddhist sutra scroll, dated 1346".^[201]
• Contour canal: After numerous conquests and consolidation of his empire, China's first emperor Qin Shi Huang (r. 221–210 BC) commissioned the engineer Shi Lu to build a new waterway canal which would pass through a mountain range and connect the Xiang and Lijiang rivers.^[48] The result of this project was the Lingqu Canal, complete with thirty-six lock gates, and since it closely follows a contour line (i.e. following the contours of the natural saddle in the hills), it is the oldest known contour canal in the world.^[48]
• Crossbow and repeating crossbow: According to Matthew Landruss and Gerald Hurley, Chinese crossbows may have been invented as far back as 2000 BC,^[202][203] while Anne McCants speculates that they existed around 1200 BC.^[204] In China bronze crossbow bolts dating as early as the mid 5th century BC were found at a State of Chu burial site in Yutaishan, Hubei.^[205] The earliest handheld crossbow stocks with bronze trigger, dating from the 6th century BC, comes from Tomb 3 and 12 found at Qufu, Shandong, capital of the State of Lu.^[158][206] Other early finds of crossbows were discovered in Tomb 138 at Saobatang, Hunan dated to the mid 4th century BC.^[207][208] Repeating crossbows, first mentioned in the Records of the Three Kingdoms, were discovered in 1986 in Tomb 47 at Qinjiazui, Hubei dated to around the 4th century BC.^[209] The earliest textual evidence of the handheld crossbow used in battle dates to the 4th century BC.^[210] Handheld crossbows with complex bronze trigger mechanisms have also been found with the Terracotta Army in the tomb of Qin Shihuang (r. 221–210 BC) that are similar to specimens from the subsequent Han Dynasty (202 BC – 220 AD), while crossbowmen described in the Han Dynasty learned drill formations, some were even mounted as cavalry units, and Han Dynasty writers attributed the success of numerous battles against the Xiongnu to massed crossbow fire.^[211][212] In comparison, the ancient Greeks also had a crossbow known as the gastraphetes ("belly-bow", so named because the shooter had to draw the bow by pressing his stomach against the concave rear) also invented in the 5th century BC;^[213] other versions were the more portable Cheirobalista (hand balista), arcubalista and manubalista, this last Roman version was almost all metal composed (the spring mechanism and the skeins).^[214][215] There was also the katapeltikon (399 BC), a siege weapon using similar mechanisms.^[216][217] Unlike the Chinese crossbow, the heavy weight and bulk of these weapons necessitated a prop to keep them standing.^[218]
• Cuju (football): The game of football known as cuju was first mentioned in China by two historical texts; the Zhan Guo Ce (compiled from the 3rd to 1st centuries BC) and the Records of the Grand Historian (published in 91 BC) by Sima Qian (145–86 BC).^[219] Both texts recorded that during the Warring States period (403–221 BC) the people of Linzi city, capital of the State of Qi, enjoyed playing cuju along with partaking in many other pastimes such as cockfighting.^[219] Besides being a recreational sport, playing cuju was also considered a military training exercise and means for soldiers to keep fit.^[219]
• Cupola furnace: Vincent C. Pigott states that the cupola furnace existed in China at least by the Warring States period (403–221 BC),^[220] while Donald B. Wagner writes that some iron ore melted in the blast furnace may have been cast directly into molds, but most, if not all, iron smelted in the blast furnace during the Han Dynasty (202 BC – 220 AD) was remelted in a cupola furnace; it was designed so that a cold blast injected at the bottom traveled through tuyere pipes across the top where the charge (i.e. of charcoal and scrap or pig iron) was dumped, the air becoming a hot blast before reaching the bottom of the furnace where the iron was melted and then drained into appropriate molds for casting.^[221]

D

Ceramic models of watchtowers from the Han Dynasty (202 BC – 220 AD) showing use of dougong brackets

A giant drawloom for figure weaving, from the Chinese Tiangong Kaiwu encyclopedia published by Song Yingxing in 1637

• Dental amalgam: Dental amalgam were used in the first part of the Tang Dynasty in China (618-907 A.D.), and in Germany by Dr. Strockerus in about 1528.^[222] Evidence of a dental amalgam first appears in the Tang Dynasty medical text Hsin Hsiu Pen Tsao written by Su Kung in 659, manufactured from tin and silver.^[223] Historical records hint that the use of amalgams may date even earlier in the Tang Dynasty.^[223] It was during the Ming Dynasty that the composition of an early dental amalgam was first published, and a text written by Liu Wen Taiin 1505 states that it consists of "100 shares of mercury, 45 shares of silver and 900 shares of tin."^[223]
• Dominoes: The Ming Dynasty (1368–1644) author Xie Zhaozhe (1567–1624) initiated the legend that dominoes were first presented to the imperial court in 1112.^[224] However, the oldest confirmed written mention of dominoes in China comes from the Former Events in Wulin (i.e. the capital Hangzhou) written by the Yuan Dynasty (1271–1368) author Zhou Mi (1232–1298), who listed "pupai" (gambling plaques or dominoes) as well as dice as items sold by peddlers during the reign of Emperor Xiaozong of Song (r. 1162–1189).^[224] Andrew Lo asserts that Zhou Mi meant dominoes when referring to pupai, since the Ming author Lu Rong (1436–1494) explicitly defined pupai as dominoes (in regards to a story of a suitor who won a maiden's hand by drawing out four winning pupai from a set).^[224] The earliest known manual written about dominoes is the Manual of the Xuanhe Period (1119–1125) written by Qu You (1347–1433).^[224] In the Encyclopedia of a Myriad of Treasures, Zhang Pu (1602–1641) described the game of laying out dominoes as pupai, although the character for pu had changed (yet retained the same pronunciation).^[224] Traditional Chinese domino games include Tien Gow, Pai Gow, Che Deng, and others. The thirty-two-piece Chinese domino set (made to represent each possible face of two thrown dice and thus have no blank faces) differs from the twenty-eight-piece domino set found in the West during the mid 18th century (in France and Italy).^[225] Dominoes first appeared in Italy during the 18th century, and although it is unknown how Chinese dominoes developed into the modern game, it is speculated that Italian missionaries in China may have brought the game to Europe.^[226]
• Dougong: A dougong is a building bracket which is unique to Chinese architecture. Since at least the Western Zhou Dynasty (c. 1050–771 BC), they were placed between the top of a column and a crossbeam to support the concave roofs of beam-in-tier buildings which were archetypal of Chinese architecture.^[227] Each dougong is formed by double bow-shaped arms (拱, gong) supported by a wooden block (斗, dou) on each side.^[227] Dougong were also used for decorative and ceremonial rather than entirely pragmatic purposes of support, such as on solid brick pagodas like the Iron Pagoda built in 1049. The Yingzao Fashi building manual published in 1103 by the Song Dynasty (960–1279) official Li Jie featured illustrations and descriptions of dougong.^[228]
• Drawloom: The earliest confirmed drawloom fabrics come from the State of Chu and date c. 400 BC.^[229] Most scholars attribute the invention of the drawloom to the ancient Chinese, although some speculate an independent invention from ancient Syria since drawloom fabrics found in Dura-Europas are thought to date before 256 AD.^[229][230] Dieter Kuhn states that an analysis of texts and textiles from the Han Dynasty (202 BC – 220 AD) proves that the figured fabrics of that era were also crafted with the use of a drawloom.^[231] The drawloom was certainly known in Persia by the 6th century AD.^[229] Eric Broudy asserts there is virtually no evidence of its use in Europe until the 17th century, while the button drawloom was allegedly invented by Jean le Calabrais in the 15th century.^[232] Mary Carolyn Beaudry disagrees, stating that it was used in the medieval Italian silk industry.^[231]

E

• Ephedrine: Ephedrine, known as ma huang in traditional Chinese medicine, originally as an extract of the herb Ephedra sinica, has been documented in China since the Han Dynasty (206 BC – 220 AD) as an antiasthmatic and stimulant.^[233] The industrial manufacture of ephedrine in China began in the 1920s, when Merck began marketing and selling the drug as ephetonin. Ephedrine exports between China and the West grew from 4 tonnes to 216 tonnes between 1926 and 1928.^[234]
• Escapement, hydraulic-powered (use in clockworks): Although the escapement mechanism was first invented by the Greek Philon of Byzantium for a mechanical washstand,^[235] an escapement mechanism for clockworks was first developed by the Buddhist monk, court astronomer, court astronomer, mathematician and engineer Yi Xing (683–727) of the Tang Dynasty (618–907) for his water-powered celestial globe in the tradition of Zhang Heng (78–139), and could be found in later Chinese clockworks such as the clock towers of both Zhang Sixun (fl. late 10th century) and Su Song (1020–1101).^{[130][174][236][237][238][239]} Yi Xing's escapement allowed for a bell to be rung automatically every hour, and a drum beaten automatically every quarter-hour, essentially a striking clock.^[240] Unlike the modern escapement which employs a suspended oscillating pendulum resting and releasing its hooks on a small rotating gear wheel, the early Chinese escapement employed the use of gravity and hydraulics.^[241] In Su Song's clock tower, scoop containers fixed to the spokes of a vertical waterwheel (which acted like a gear wheel) would be filled one by one with siphoned water from a clepsydra tank.^[242] When the weight of the water in the scoop filled to an excess, it overcame a counterweight that in turn tripped a lever allowing the scoop to rotate on a pivot and drain its water.^[242] However, as the scoop fell, it tripped a coupling tongue that temporarily pulled down on a long vertical chain, the latter yanking down on a balancing lever which would pull upward on a small chain connected to a locking arm, the latter lifting momentarily to release the top arrested spoke before coming back down to repeat the entire process over again.^[242] It should be pointed out that the Chinese intermittently working liquid-driven escapement had "only the name in common" with the true mechanical escapement of medieval European mechanical clocks of the 14th century onwards, which worked instead with weights, producing continuous but discrete beats and that derived from the Greek and Roman verge mechanism (alarum) device of earlier mechanisms.^[243]

^[244]

• Exploding cannonballs: The Huolongjing military manual compiled by Jiao Yu (fl. 14th to early 15th century) and Liu Bowen (1311–1375) in the mid 14th century described the earliest known exploding cannonballs, which were made of cast iron with a hollow core packed with gunpowder. Jiao and Liu wrote that when fired, they could set enemy camps ablaze. The earliest evidence for exploding cannonballs in Europe date to the 16th century.^[245][246] The Huolongjing also specified the use of poison and blinding gunpowder filled into exploding shells; the effects of this chemical warfare was described as such: "Enemy soldiers will get their faces and eyes burnt, and the smoke will attack their noses, mouths, and eyes."^[247]

F

The field mill in the Chinese book Yuanxi Qiqi Tushuk Luzui (Collected Diagrams and Explanations of the Wonderful Machines of the Far West), by Johann Schreck and Wang Zheng, 1627

Local man setting off fireworks during Chinese New Year in Shanghai

"Angler on a Wintry Lake", painted in 1195 by Ma Yuan, featuring the oldest known depiction of a fishing reel

Chinese flamethrower from the Wujing Zongyao manuscript of 1044, Song Dynasty

Sheng player Guo Yi beside the River Thames, London, England

An illustration of a fragmentation bomb from the 14th century Ming Dynasty text Huolongjing. The black dots represent iron pellets.

• Field mill: In the Yezhongji ('Record of Affairs at the Capital Ye of the Later Zhao Dynasty') written by Lu Hui (fl. 350 AD), various mechanical devices are described which were invented by two Later Zhao (319–351) engineers known as Xie Fei, a Palace Officer, and Wei Mengbian, the Director of the Imperial Workshops.^[248] One of these is the field mill, which was essentially a cart with millstones placed onto the frame; these were mechanically rotated by the movement of the cart's terrain wheels in order to grind wheat and other cereal crops.^[249] A similar vehicle these two invented was the "pounding cart", which had wooden statues mounted on the top which were actually mechanical figures who operated real tilt hammers in order to hull rice; again, the device only functioned when the cart was moved forward and the wheels turned.^[249] The field mill lost its use in China sometime after the Later Zhao, but it was invented separately in Europe in 1580 by the Italian military engineer Pompeo Targone.^[250] It was featured in a treatise by Vittorio Zonca in 1607, and then in a Chinese book of 1627 (concerning Western technology) that was compiled and translated by the German Jesuit Johann Schreck (1576–1630) and the Ming Dynasty (1368–1644) Chinese author Wang Zheng (王徵 1571–1644), although by then it was considered by the Chinese to be an original Western contraption.^[251]
• Finery forge: In addition to accidental lumps of low-carbon wrought iron produced by excessive injected air in Chinese cupola furnaces, the ancient Chinese also created wrought iron by using the finery forge at least by the 2nd century BC, the earliest specimens of cast and pig iron fined into wrought iron and steel found at the early Han Dynasty (202 BC – 220 AD) site at Tieshengguo.^[252] Pigott speculates that the finery forge existed in the previous Warring States period (403–221 BC), due to the fact that there are wrought iron items from China dating to that period and there is no documented evidence of the bloomery ever being used in China.^[253] The fining process involved liquifying cast iron in a fining hearth and removing carbon from the molten cast iron through oxidation.^[252] Wagner writes that in addition to the Han Dynasty hearths believed to be fining hearths, there is also pictoral evidence of the fining hearth from a Shandong tomb mural dated 1st to 2nd century AD, as well as a hint of written evidence in the 4th century AD Daoist text Taiping Jing.^[254]
• Fire lance: The fire lance was a proto-gun developed in the 10th century with a tube of first bamboo and later on metal that shot a weak gunpowder blast of flame and shrapnel; its earliest representation comes from a painting found at Dunhuang.^{[255][256][257]}
• Fireworks: Fireworks first appeared in China during the Song Dynasty (960–1279), in the early age of gunpowder. The common people in the Song era could purchase simple fireworks from market vendors; these were made of sticks of bamboo packed with gunpowder,^[258] although grander displays were known to be held.^[259] Rocket propulsion was soon applied to warfare, and by the time of the mid 14th century there were many types of rocket launchers available.^[260]
• Firecracker: The predecessor of the firecracker was a type of heated bamboo, used as early as 200 BC, that exploded when heated continuously. The Chinese name for firecrackers, baozhu, literally means "exploding bamboo."^[261] After the invention of gunpowder, gunpowder firecrackers had a shape that resembled bamboo and produced a similar sound, so the name "exploding bamboo" was retained.^[262] In traditional Chinese culture, firecrackers were used to scare off evil spirits.^[262]
• Fishing reel: In literary records, the earliest evidence of the fishing reel comes from a 4th-century AD^[263][264] work entitled Lives of Famous Immortals.^[265] The earliest known depiction of a fishing reel comes from a Southern Song (1127–1279) painting done in 1195 by Ma Yuan (c. 1160–1225) called "Angler on a Wintry Lake," showing a man sitting on a small sampan boat while casting out his fishing line.^[266] Another fishing reel was featured in a painting by Wu Zhen (1280–1354).^[266] The book Tianzhu lingqian (Holy Lections from Indian Sources), printed between 1208 and 1224, features two different woodblock print illustrations of fishing reels being used.^[266] An Armenian parchment Gospel of the 13th century shows a reel (though not as clearly depicted as the Chinese ones).^[266] The Sancai Tuhui, a Chinese encyclopedia published in 1609, features the next known picture of a fishing reel and vividly shows the windlass pulley of the device.^[266] These five pictures mentioned are the only ones which feature fishing reels before the year 1651 (when the first English illustration was made); after that year they became commonly depicted in world art.^[266]
• Flamethrower, double piston and gunpowder-activated: Although the single piston flamethrower was first developed in the Byzantine Empire during the 7th century,^[267] the 10th-century Chinese flamethrower, or Pen Huo Qi, boasted a continuous stream of flame by employing double piston syringes (which had been known since the Han Dynasty) spouting Greek fire which had been imported from China's maritime trade contacts in the Middle East. It was first used in battle 932 during the Five Dynasties and Ten Kingdoms period (907–960), and the earliest illustration is found in the early Song Dynasty military manuscript Wujing Zongyao of 1044, which also described the device in full.^[268][269] Unlike the Greek model which employed a furnace, the Pen Huo Qi was ignited by an incendiary gunpowder fuse.^[268]
• Flare: The earliest recorded use of gunpowder for signalling purposes was the 'signal bomb' used by the Song Dynasty Chinese as the Mongol-led Yuan Dynasty besieged Yangzhou in 1276.^[270] These soft-shelled bombs, timed to explode in mid-air, were used to send messages to a detachment of troops far in the distance. Another mention of the signal bomb appears in a text dating from 1293 requesting their collection from those still stored in Zhejiang.^[270] A signal gun appears in Korea by 1600. The Wu I Thu Phu Thung Chih or Illustrated Military Encyclopedia written in 1791 depicts a signal gun in an illustration.^[271]
• Folding screen: The folding screen is a type of furniture consisting of several frames or panels. Screens date back to China during the Eastern Zhou Dynasty period (771–256 BC).^[272][273] These were initially one-panel screens in contrast to folding screens.^[274] Folding screens were invented during the Han Dynasty (206 BC - AD 220).^[275] Depictions of those folding screens have been found in Han Dynasty era tombs, such as one in Zhucheng, Shandong Province.^[272] During the Tang Dynasty, folding screens were considered ideal ornaments for many painters to display their paintings and calligraphy on.^[273][274] Many artists painted on paper or silk and applied it onto the folding screen.^[273] The landscape paintings on folding screens reached its height during the Song Dynasty (960–1279).^[272]
• Forensic entomology: The Song Dynasty (960–1279) forensic science work Collected Cases of Injustice Rectified published by Song Ci in 1247 contains the oldest known case of forensic entomology.^[276] In a murder case of 1235, a villager was stabbed to death and authorities determined that his wounds were inflicted by a sickle; this was a tool used for cutting rice at harvest time, a fact which led them to suspect a fellow peasant worker was involved.^[276] The local magistrate had the villagers assemble in the town square where they would temporarily relinquish their sickles.^[276] Within minutes, a mass of blow flies gathered around one sickle and none other, attracted to the scent of traces of blood unseen by the naked eye.^[276] It became apparent to all that the owner of that sickle was the culprit, the latter pleading for mercy as he was detained by authorities.^[276]
• Fragmentation bomb: The use of fragmentation in bombs dates to the 14th century, and first appears in the Ming Dynasty text Huolongjing. The fragmentation bombs were filled with iron pellets and pieces of broken porcelain. A heated mixture of salammoniac, tung oil, chin chih, scallion juice, and yin hsiu is poured into the bomb, coating the pellets. Once the bomb explodes, the resulting shrapnel is capable of piercing the skin and blinding enemy soldiers.^[277]
• Free reed aerophone: The musical pipe organ employing metal piston bellows had a long history in the West, dating back to the Hellenistic period. However, the Western pipe organ did not make use of the reed, which the ancient Chinese mouth organ employed. The latter instrument, called a sheng and made traditionally of bamboo pipes, was first mentioned in the Shi Jing of the Zhou Dynasty (c. 1050–256 BC). The Chinese sheng is considered the ancestor of the harmonica, harmonium, concertina, accordion, and all other reed organ instruments. A free reed organ was invented in the Arab world in the 13th century, while the German Heinrich Traxdorf (fl. 15th century) of Nuremberg built one around 1460 AD. It is thought that the classical Chinese sheng travelled west through Russia during the 19th century, as it was described then in Saint Petersburg.^[278]

G

The go board game

Rock carving of a bodhisattva playing a guqin, Northern Wei Dynasty (386–534 AD)

• Gimbal ('Cardan' suspension): The gimbal is known as the 'Cardan' suspension after Gerolamo Cardano (1501–1576), yet it was known long before him.^[279] Joseph Needham writes that the earliest confirmed use of gimbals in Europe is the 9th century recipe book Little Key of Painting Mappae clavicula, which mentioned a vase surrounded by rings which allowed it to be undisturbed when in a rolling motion.^[280] Needham and George Sarton both write that an Arabic translation—dated to roughly the era of Al-Ma'mun (r. 813–833)—of an ancient Greek work now lost (i.e. Pneumatica) by Philo of Byzantium (c. 280 – c. 220 BC) contains a description of gimbals used to support an inkpot that could wet a pen on any of its sides, yet Needham suspects Arabic interpolation and doubts total authenticity, while Sarton asserts that for the most part the Arabic translation is faithful to Philo's lost original, hence Philo should be credited with the invention of the gimbal.^[281][282] Around 180 AD, the Han Dynasty (202 BC – 220 AD) inventor Ding Huan (丁緩)—who also created a rotary fan and zoetrope lamp—invented a 'Perfume Burner for use among Cushions', or 'Bedclothes Censer'.^[283] This incense burner had a series of metal rings which could be moved in any direction while the burner in the middle remained constantly level.^[283] This is the first clear reference in China of the gimbal, although there is a hint in the writing of Sima Xiangru (179–117 BC) that this device existed in the 2nd century BC (i.e., 'the metal rings burning perfume').^[284] The gimbal incense burner is mentioned in subsequent dynasties, while silverwork specimens of gimbal incense burners from the Tang Dynasty (618–907) still exist.^[285] In the Liang Dynasty (502–557) there is mention of gimbals used in hinges for doors and windows, while an unnamed artisan presented a warming stove to Wu Zetian (r. 690–705) in 692 which employed gimbals to keep it constantly balanced.^[286]
• Go (board game) (圍棋 pinyin: wéiqí in Chinese): Although ancient Chinese legend (perhaps contrived during the Han Dynasty) has it that the mythological ruler Yao came down to earth from the Heavens around 2200 BC carrying with him a go board and stone player's pieces, it is known from existing literature that the go board game existed since at least the 10th century BC during the Zhou Dynasty (c. 1050–256 BC) and was even mentioned in writing by the philosophers Confucius (551–479 BC) and Mencius (371–289 BC), although the latter two had a slightly negative opinion of it.^[287][288]
• Guqin (古琴 pinyin: gǔqín in Chinese): The guqin is one of the oldest stringed zither instruments from China and has existed since at least the Shang Dynasty (c. 1600 – c. 1050 BC), as a Shang oracle bone contains the oldest known inscription of the Chinese character for qin (琴).^[289] The oldest example of a guqin comes from the tomb of Marquis Yi of Zeng (433 BC); Bo Lawergren argues they may have developed from Middle Eastern harps like konghou, which was also found in Qiemo, Xinjiang dating to 400–200 BC.^[290] It was said to be popular in the Zhou Dynasty (c. 1050 – 256 BC), while the oldest known written tablature for the guqin dates to the Han Dynasty (202 BC – 220 AD).^[289] The guqin became a musical instrument highly associated with China's gentry class when it was exalted as one of the Four Arts of the Chinese Scholar as well as one of the gentry's "nine guests" described by Shen Kuo (1031–1095);^[291] it was even featured in painted artwork, such as in a 12th-century piece by Emperor Huizong himself.
• Goldfish, domestication of: In ancient China, various species of carp (collectively known as Asian carps) were domesticated and have been reared as food fish for thousands of years. Some of these normally gray or silver species have a tendency to produce red, orange or yellow color mutations; this was first recorded in the Jin Dynasty (265–420).^[292] During the Tang Dynasty (618–907), it was popular to raise carp in ornamental ponds and watergardens. A natural genetic mutation produced gold (actually yellowish orange) rather than silver coloration. People began to breed the gold variety instead of the silver variety, keeping them in ponds or other bodies of water.^[293][294] Goldfish were introduced into Europe during the 17th century, and into North America in the 19th century.^[295][296]

H

A bronze hand cannon from the Yuan Dynasty (1271–1368), one of the oldest in the world; the oldest specimen dates to about 1288, when the first textual reference to the hand cannon appears in Chinese literature.

A Sui Dynasty (581–618 AD) cart figurine pulled by a bull

• Hand grenade, explosive: Before explosive grenades, incendiary grenades were used by the Eastern Roman Empire, incorporating Greek fire.^[297] Early prototypes to the modern explosive grenade, according to Needham, appear in the military book, Wujing Zongyao ("Compilation of Military Classics"), by 1044. During the Song Dynasty, weapons known as Zhen Tian Lei were created when Chinese soldiers packed gunpowder into ceramic or metal containers and thrown at the enemy. Further descriptions and illustrations of early Chinese hand grenades are provided in the Huolongjing.^[298]
• Hand cannon: The earliest metal-barrel hand cannons dating to the 13th century are attested to by archaeological evidence from a Heilongjiang excavation as well as written evidence in the Yuanshi (1370) concerning Li Tang, an ethnic Jurchen commander under the Yuan Dynasty (1271–1368) who in 1288 suppressed the rebellion of the Christian prince Nayan with his "gun-soldiers" or chongzu, this being the earliest known event where this phrase was used.^[299] The bronze Yuan Dynasty gun from Heilongjiang which dates to about 1288 is a little over 0.3 m (1 ft) in length and weighs 3.6 kg (8 lbs). It has a small touch hole for ignition and an even bore except for the bulbous enlargement around the explosion chamber. It was excavated with a bronze pan, mirror and vase.^[300]
• Heavy moldboard iron plow: Although use of the simple wooden ard in China must have preceded it, the earliest discovered Chinese iron plows date to roughly 500 BC, during the Zhou Dynasty (1122–256 BC) and were flat, V-shaped, and mounted on wooden poles and handles.^[301][302] By the 3rd century BC, improved iron casting techniques led to the development of the heavy moldboard plow, seen in Han Dynasty (202 BC – 220 AD) artwork such as tomb carved bricks.^[301] The moldboard allowed the Chinese to turn farm soil without clogging the plowshare with dirt, which was flung off the wheelbarrow via slanted wings on both sides.^[303] While the frame of excavated plowshares dating to the Warring States period (403–221 BC) were made mostly of perishable wood except for the iron blade, the frame of excavated plowshares dating to the Han Dynasty were made entirely of solid iron with the moldboard attached to the top to turn the soil.^[304]
• Helicopter rotor and bamboo-copter: The use of a helicopter rotor for vertical flight has existed since 400 BC in the form of the bamboo-copter, an ancient Chinese toy.^[305] The bamboo-copter is spun by rolling a stick attached to a rotor. The spinning creates lift, and the toy flies when released.^[305] The philosopher Ge Hong's book the Baopuzi (Master Who Embraces Simplicity), written around 317, describes the apocryphal use of a possible rotor in aircraft: "Some have made flying cars (feiche) with wood from the inner part of the jujube tree, using ox-leather (straps) fastened to returning blades so as to set the machine in motion." Needham concludes that this is a description of a helicopter top, because "'returning (or revolving) blades' can hardly mean anything else, especially in close association with a belt or strap."^[306] Leonardo da Vinci designed a machine known as an "aerial screw" with a rotor based on a water screw. The Russian polymath Mikhail Lomonosov developed a rotor based on the Chinese toy. The French naturalist Christian de Launoy constructed his rotor out of turkey feathers.^[305] Sir George Cayley, inspired by the Chinese top in his childhood, created multiple vertical flight machines with rotors made of tin sheets.^[305] Alphonse Pénaud would later develop coaxial rotor model helicopter toys in 1870, powered by rubber bands. One of these toys, given as a gift by their father, would inspire the Wright brothers to pursue the dream of flight.^[307]
• Hill censer: The hill censer, a vessel used for burning incense, dates to the Han Dynasty (206 BC – 220 AD). The censers are shaped like mountains and were used for religious rituals. The shape of the hill censer acts as a visual aid for envisioning the sacred mountains that were said to have been inhabited by Taoist immortals.^[308] Hill censers were originally designed for Taoist rituals, but were later used by Chinese Buddhists.^[309] Hill censers often include carvings of wilds animals and birds. Some censers depict waves at the foundation of the vessel, said to be the waves of the East China Sea.^[310] A hole at the top of the censer releases the smoke of the incense.^[310]
• Horse collar: A significant improvement of the ancient breast harness was the horse collar. The horse collar was depicted in a Northern Wei (386–534) mural at Dunhuang, China, dated 477–499; the latter artwork does not feature the essential collar cushion behind the cross bar, though, while a later Tang Dynasty (618–907) mural of about 851 accurately displays the cushioned collar behind the cross bar.^[311][312] An earlier painting of the Sui Dynasty (581–618) accurately depicted the horse collar as it is seen today, yet the illustration shows its use on a camel instead of a horse.^[313]
• Horse harness, ("trace" or "breast"): Throughout the ancient world, the 'throat-and-girth' harness was used for harnessing horses that pulled carts; this greatly limited a horse's ability to exert itself as it was constantly choked at the neck.^[314] A painting on a lacquerware box from the State of Chu, dated to the 4th century BC, shows the first known use of a yoke placed across a horses's chest, with traces connecting to the chariot shaft.^[315] The hard yoke across the horse's chest was gradually replaced by a breast strap, which was often depicted in carved reliefs and stamped bricks of tombs from the Han Dynasty (202 BC – 220 AD).^[316] Eventually, the horse collar was invented in China, at least by the 5th century.^[311][317]

I

A Song painting by Ma Lin, dated 1246, using India ink on silk

• Incense: According to David Michael Stoddart, "the earliest recorded use of incense comes from the Chinese who burned various herbs and plant products."^[318] Sandalwood, casia, styrax, and cinnamon were used by the Chinese.^[318]
• India ink: Although named after carbonaceous pigment materials originating from India, Indian ink first appeared in China; some scholars say it was made as far back as the 3rd millennium BC, while others state it was perhaps not invented until the Wei Dynasty (220–265 AD).^{[319][320][321][322]}
• Inkstone: The inkstone is a stone mortar used in Chinese calligraphy for grinding and mixing ink. Other than stone, inkstones are also manufactured from clay, bronze, iron, and porcelain. The device evolved from a rubbing tool used for rubbing dyes dating around 6000 to 7000 years ago.^[323] The earliest excavated inkstone is dated from the 3rd century BC, and was discovered in a tomb located in modern Yunmeng, Hubei. Usage of the inkstone was popularized during the Han Dynasty.^[324]
• Inoculation, treatment of smallpox: Joseph Needham states that a case of inoculation for smallpox may have existed in the late 10th century during the Song Dynasty (960–1279), yet they rely on a book Zhongdou xinfa (種痘心法) written in 1808 by Zhu Yiliang for this evidence.^[325] Wan Quan (1499–1582) wrote the first clear reference to smallpox inoculation in his Douzhen xinfa (痘疹心法) of 1549.^[326] The process of inoculation was also vividly described by Yu Chang in his Yuyi cao (寓意草), or Notes on My Judgment published in 1643, and Zhang Yan in his Zhongdou xinshu (種痘新書), or New book on smallpox inoculation in 1741. As written by Yu Tianchi in his Shadou jijie (痧痘集解) of 1727, which was based on Wang Zhangren's Douzhen jinjing lu (痘疹金鏡錄) of 1579, the technique of inoculation to avoid smallpox was not widespread in China until the reign of the Longqing Emperor (r. 1567 – 1572) during the Ming Dynasty (1368–1644).^[326]

J

• Jacob's staff: The Song Dynasty (960–1279) official Shen Kuo (1031–1095), an antiquarian who pursued studies of archaeological finds, unearthed an ancient crossbow-like mechanism from a garden in Jiangsu which had on its stock a graduated sighting scale in minute measurements.^[327] He wrote that while viewing the whole of a mountain, the distance on the instrument was long, but while viewing a small part of the mountainside the distance was short due to the device's cross piece that had to be pushed further away from the observer's eye, with the graduation starting on the further end.^[327] He wrote that if one placed an arrow on the device and looked past its end, the degree of the mountain could be measured and thus its height could be calculated.^[327] Shen wrote that this was similar to mathematicians who used right-angled triangles to measure height.^[327] Joseph Needham writes that what Shen had discovered was Jacob's staff, a surveying tool which was not known in Europe until the Jewish mathematician Levi ben Gerson (1288–1344) of Provence, France described it in 1321.^[328]

A jade burial suit from the Han Dynasty (202 BC – 220 AD), at the Museum of Chinese History, Beijing

Two-masted Chinese junk from the Tiangong Kaiwu published by Song Yingxing, 1637

• Jade burial suit: Burial suits made of jade existed in China during the Han Dynasty (202 BC – 220 AD). Confirming ancient records about Han royalty and nobility buried in jade burial suits, archaeologists discovered in June 1968 the tombs and jade burial suits of Prince Liu Sheng (d. 113 BC) and his wife Dou Wan in Hebei province.^[329] Liu's suit, in twelve flexible sections, comprised 2,690 square pieces of green jade with holes punctured in the four corners of each piece so that they could be sewn together with gold thread.^[330] The total weight of the gold thread used in his suit was 1,110 g (39 oz).^[331] Princess Dou Wan's suit had 2,156 pieces of jade stitched together with 703 g (24.7 oz) of gold thread.^[331] Although jade burial outer wears and head masks appear in tombs of the early Han Dynasty, burial suits did not appear until the reign of Emperor Wen of Han (r. 180–157 BC), with the earliest being found in the Shizishan site. A total of 22 Western Han (202 BC – 9 AD) and 27 Eastern Han (25–220 AD) complete and partial jade burial suits were uncovered between 1954 and 1996. They are found mainly in Hebei, Shandong, Jiangsu and Henan, as well as at Yangjiawan, Dongyuan, Guangzhou, Mawangdui, Mianyang and Shizhaishan. The jade burial suit gradually disappeared when it was forbidden in 222 by Emperor Wen of Wei.^[332]
• Junk (ship): The Chinese junk, derived from the Portuguese term junco (which in turn was adapted from the Javanese djong meaning "ship"),^[333] was a ship design unique to China, although many other ship types in China (such as the towered lou chuan) preceded it.^[334][335] Its origins could be seen in the latter half of the Han Dynasty (202 BC – 220 AD), when ship designs began to have square-ended bows and sterns with flat bottom hulls.^[336] Unlike the earliest shipbuilding traditions of the Western world and South Asia, the junk had a (flat or slightly rounded) carvel-shaped hull which lacked a keel and sternpost (necessitating block and tackle or socket-and-jaw attachment of the Chinese rudder).^[337] Since there is no keel in the design, solid transverse bulkheads take the place of structural ribs.^[338] There are many theories about the evolution of the junk. One suggests that it developed from the double canoe, another claims that the bamboo raft used by Taiwanese aboriginals was the source of the junk.^[339] Records by Western travelers in China during the Song Dynasty mention that junks could support 130 sailors. The size of junks grew during the Ming Dynasty. By the 14th century, junks could carry 2,000 tons. Archaeological evidence of the large size of the junk has been proven by a sunken junk discovered in 1973 near the coast of Southeastern China.^[340]

K

• Kite: As written in the Mozi, the philosopher, artisan, and engineer Lu Ban (fl. 5th century BC) from the State of Lu created a wooden bird that remained flying in the air for three days, essentially a kite; there is written evidence that kites were used as rescue signals when the city of Nanjing was besieged by Hou Jing (died 552) during the reign of Emperor Wu of Liang (r. 502–549), while similar accounts of kites used for military signalling are found in the Tang (618–907) and Jin (1115–1234) dynasties; kite flying as a pastime can be seen in painted murals of Dunhuang dating to the Northern Wei (386–534) period, while descriptions of flying kites as a pastime have been found in Song (960–1279) and Ming (1368–1644) texts.^[341][342]

L

The 'self-tripped trespass land mine', from the Huolongjing, 14th century

A pair of Eastern Han Dynasty (25–220 AD) tomb statuettes playing the game liubo

The Chinese game of majiang (麻將), commonly referred to as mahjong in English, has been played since at least the 19th century and has its roots in earlier Chinese card games

Example of a Chinese printed map in a gazetteer, showing Fengshan County of Taiwan Prefecture, published in 1696; the first known printed map from China comes from a Song Dynasty (960–1279) encyclopedia of the 12th century

Wooden statues of tomb guardians from the Tang Dynasty (618–907); mechanical-driven wooden statues served as cup-bearers, wine-pourers, and others in this age

A cross section of a Chinese hall, from the Yingzao Fashi architectural treatise published by Li Jie in 1103, during the Song Dynasty (960–1279); this book explicitly laid out an eight-graded modular system of architecture for timber halls and pavilions of different sizes

A multistage rocket from the 14th-century military manuscript Huolongjing, Ming Dynasty

A naval mine from the Huolongjing, mid-14th century

A page from The Nine Chapters on the Mathematical Art, commented on by Liu Hui in 263

Chinese playing card dated c. 1400 AD, Ming Dynasty

A sancai porcelain dish from the Tang Dynasty, 8th century

A plan and side view of a canal pound lock, essentially a double-gate canal lock used to regulate water levels in segmented canal chambers for the safe passage of ships, first invented by the 10th century engineer Qiao Weiyo for a section of China's Grand Canal

Joseph Needham writes that the development of the raised-relief map in China may have been influenced by Han Dynasty (202 BC – 220 AD) incense burners and jars such as this, showing artificial mountains as a lid decoration; these were often used to depict the mythical Penglai Island.^[343]

A restaurant menu from Hong Kong; the first menus appeared in China during the Song Dynasty (960–1279).

The 'flying crow with magic fire' winged rocket bomb from the Huolongjing, mid 14th century, compiled by Liu Bowen and Jiao Yu

A Song Dynasty painting on silk of two Chinese cargo ships accompanied by a smaller boat; notice the large stern-mounted rudder on the ship shown in the foreground

• Land mine: Textual evidence suggests that the first use of a land mine in history was by a Song Dynasty brigadier general known as Lou Qianxia, who used an 'enormous bomb' (huo pao) to kill Mongol soldiers invading Guangxi in 1277.^[344] However, the first detailed description of the land mine was given in the Huolongjing text written by Jiao Yu (fl. 14th to early 15th century) and Liu Bowen (1311–1375) during the late Yuan Dynasty (1271–1368) and early Ming Dynasty (1368–1644).^[345] Jiao and Liu wrote that land mines were spherical, made of cast iron, and their fuses ignited by a mechanism tripped by enemy movement; although Jiao and Liu did not describe this trip mechanism in full detail, a later text of 1606 revealed that enemy movement released a pin that allowed hidden underground weights to fall and spin a chord around an axle that rotated a spinning wheel acting as a flint to spark a train of fuses.^[346]
• Leeboard: To avoid leeward drift caused by the force of wind while sailing, the leeboard was invented; it was a board lowered onto the side of the ship opposite to the direction of the wind, helping the ship to stay upright and on course. Paul Johnstone and Sean McGrail state that an odd-looking second paddle on a bronze drum of the Dong Son culture (centered in the Red River Delta of northern Vietnam) may depict a leeboard in use as early as 300 BC.^[347] Leeboards may have been invented in China as early as the 8th century during the Tang Dynasty and are featured shortly after in 9th century engraved artwork found at the Borobudur monument built during the Sailendra dynasty of Central Java (Indonesia).^[347] Leeboards were first used in the West by the Dutch, during the 15th to 16th centuries (possibly used on early Dutch cogs, or perhaps influenced by a Chinese origin).^[348][349]
• Liubo: The now defunct board game liubo for the most part remains an enigma for modern scholars still deciphering exactly how it was played; its association with both gambling and divination make it a unique game.^[350][351] The earliest two liubo game boards are found in the Zhongshan Tomb 3 at Shijiazhuang, Hebei.^[352][353] Similar finds, dating from the mid 4th century BC, are also found in the Chu Tomb 197 and 314 at Jiangling, Hubei.^[352][354] Liubo game boards have been found in several Western Han (202 BC – 9 AD) tombs; 1 wooden board at Jiangdu in Jiangsu; 1 wooden board in Tomb 8 at Fenghuangshan in Hubei; 1 lacquered set of liubo in Tomb 3 at Mawangdui Han tombs site in Hunan; 1 lacquered board in Tomb 1 at Dafentou in Yunnan; 1 bronze board at Xilin in Guangxi.^[355] During the Han Dynasty, an argument over the divination portents of the game as a result of a playing session led to a fight between a Western Han crown prince and Liu Xian (劉賢), where the latter was killed in the scuffle which (in part) prompted his father Liu Pi (劉濞), the King of Wu, to rebel against central Han authority in the Rebellion of the Seven States (154 BC).^[350] The historian Michael Loewe asserts that the set pieces of liubo were symbolic of the forces of the Chinese Five Elements, wu xing.^[351]

M

• Magic mirrors: In about 800 AD, during the Tang Dynasty (618–907), a book entitled Record of Ancient Mirrors described the method of crafting solid bronze mirrors with decorations, written characters, or patterns on the reverse side that could cast these in a reflection on a nearby surface as light struck the front, polished side of the mirror; due to this seemingly transparent effect, they were called 'light-penetration mirrors' by the Chinese. Unfortunately, this Tang era book was lost over the centuries, but magic mirrors were described in the Dream Pool Essays by Shen Kuo (1031–1095), who owned three of them as a family heirloom. Perplexed as to how solid metal could be transparent, Shen guessed that some sort of quenching technique was used to produce tiny wrinkles on the face of the mirror too small to be observed by the eye. Although his explanation of different cooling rates was incorrect, he was right to suggest the surface contained minute variations which the naked eye could not detect; these mirrors also had no transparent quality at all, as discovered by William Bragg in 1932.^[356]
• Mahjong: Jelte Rep writes that the gambling game of mahjong (Traditional Chinese: 麻將; Pinyin: májiàng), which employs a set of over a hundred tiles, was first invented in 1846 by Zhen Yumen, a Qing Dynasty (1644–1912) diplomatic official from Ningbo.^[357] However, Rep traces the origins of the game to a card game of the Tang Dynasty (618–907) which used thirty-two wood or ivory pieces in the shape of cards.^[358] This evolved into the forty-card game of madiao (馬吊) during the Ming Dynasty (1368–1644), which had four suits of cards instead of the three found in modern mahjong.^[358]
• Match, non-friction: The earliest type of match for lighting fire was made in China by 577 AD, invented by Northern Qi (550–577) court ladies as they desperately looked for materials to light fires for cooking and heating as enemy troops of Northern Zhou (557–581) and the Chen Dynasty (557–589) besieged their city from outside. Early matches in China were designed to be lit by an existing flame and carried to light another fire. They were pinewood sticks impregnated with sulfur and needed only a slight touch from a flame to light. This was written in the Records of the Unworldly and Strange by Tao Gu in 950 (Five Dynasties and Ten Kingdoms period).^[359]
• Mechanical theater (driven by carriage wheels): The inventors of the field mill mentioned above, Xie Fei and Wei Mengbian of the Later Zhao (319–351 AD), also invented an intricate mechanical theater mounted on a carriage, its figures operated by motive power (i.e. simply advancing the carriage forward).^[360] From 335 to 345 AD, they worked at the court of the ethnic-Jie emperor Shi Hu (334–349).^[360] The vehicle they crafted was a four-wheeled and 6 m (20 ft) long carriage that was about 3 m (10 ft) wide.^[360] On it rested a large golden Buddha statue with a Daoist statue continually rubbing his front with his mechanical hand.^[360] The Buddha was also surrounded by ten wooden Daoists who rotated around him in a circuit, periodically bowing to him, saluting him, and throwing incense into a censer.^[360] Above the Buddha were nine dragon-headed faucets which spouted water.^[360] Like the field mill and the pounding cart of these two inventors, when the carriage halted, so did all of its moving components of mechanical statues and spouting faucets.^[361]
• Mechanical cup-bearers and wine-pourers on automatic-traveling boats: The mechanical engineer Huang Gun served the court of Emperor Yang of Sui (r. 604–617) and wrote the book Shuishi Tujing on his inventions, which his colleague Du Bao enlarged and commented on.^[362] He constructed seven small boats, called 'wine boats', that were as large as 3 m (10 ft) long and 1.8 m (6 ft) wide which supported a number of mechanical figures of wooden statues called 'hydraulic elegances', each about 0.6 m (2 ft) tall, some of them animals but most in human form consisting of singing girls, musicians playing actual instruments, dancers and tumblers, oarsmen busy rowing, cup-bearers, and wine-pourers all moving simultaneously as if alive.^[362] These boats were set to travel at timed intervals along circuits made of winding stone channels and canals in palace courtyards and gardens (designed by Tang Haogui), where guests would gather for special occasions.^[362] The cup-bearer stood at the bow of each ship and beside him the wine-pourer; when the ship made automatically timed periodic stops where guests were seated, the cup-bearer automatically stretched out his arm with a full cup of wine.^[362] When the guest was done emptying his cup, he placed the cup back into the figure's hands; the latter then waited as the wine-pourer filled a second cup to be emptied.^[362] When this guest had been served, the wine boat automatically moved onwards to the next stop.^[362] Joseph Needham speculates that the 'wine boats' may have been paddle-wheel-driven.^[363] Another paddle wheel ship was commanded by Wang Zhen'e and described in his biographies dated from the Liu Song Dynasty (420–479).^[364] side from the partial remains of the Shuishi Tujing, an account of these 'wine boats' was also preserved by Huang Gun's contemporary Yan Shigu (581–645).^[365]
• Merit system: The earliest example of a merit system dates back to the Qin and Han dynasties. In order to maintain power over a large, sprawling empire, it became necessary for the government to maintain a complex network of officials.^[366] Prospective officials could come from a rural background and government positions were not restricted to the nobility. Rank was determined by merit, through the civil service examinations, and education became the key for social mobility.^[366] After the fall of the Han Dynasty, the nine-rank system was established during the Three Kingdoms period. The concept of a merit system spread from China to British India during the 17th century, and then into continental Europe and the United States.^[367]
• Modular system of architecture, eight standard grades: Although other texts preceded it, such as the 'National Building Law' of the Tang Dynasty (618–907) which was partially preserved in other texts, the Yingzao Fashi published in 1103 by the Song Dynasty (960–1279) scholar-official Li Jie (1065–1110) is the oldest known Chinese architectural treatise that has survived fully intact.^[368] It contains descriptions and illustrations detailing the cai fen system (材份制) of eight standard dimensions for module components of timber architecture and structural carpentry.^[369] The eight standard grades of module timber components in the Yingzao Fashi, with grade I being the largest and grade VIII the smallest, were used to determine the ultimate proportions and scale of a building as a whole, as all timber hall types—palaces, mansions, ordinary houses, and pavilions—were hierarchically categorized along the lines of which cai fen grade was employed.^[370] For example, palace type buildings used only grades I through V, while mansion type buildings never used components larger than grade III and no less than grade VI.^[371] In this system of structural carpentry, the smallest grade of VIII is represented by one cai; one cai is equal to the modern equivalent of 15 cm (5.9 in), while one cai is also divided into fifteen fen (hence the title of this modular system).^[372]
• Multiple-tube seed drill: The wooden seed drill existed in China by the 3rd century BC, while the multiple-tube iron seed drill was first invented in China by the 2nd century BC, during the Han Dynasty (202 BC – 220 AD).^[373][374] The seed drill allowed for greater speed and regulation of distributing seeds in lined rows of crops instead of casting them out onto the farm field.^[373]
• Multistage rocket: Although there is still some ambiguity as to whether the earliest rockets of the 13th century were first developed in Europe (i.e. 'ignis volantis in aere' in the work of Marcus Graecus around 1232, although Needham and Davis assert it was most likely a fire lance), the Middle East (i.e. 'sahm al-Khitāi' or 'arrows of China' as referred to by Hasan al-Rhammāh in 1280) or China (i.e. 'di lao shu' or 'ground rat' mentioned in 1264 or the 'chong' mortar used by the armies of the Song Dynasty and invading Mongols during the 1270s), during the Yuan Dynasty (1271–1368) the term 'fire arrow' once implied to mean incendiary arrows during the Tang Dynasty was then used to describe the true rocket, producing a headache, as Needham says, for historians;^{[30][375][376]} the Huolongjing written by Jiao Yu (fl. 14th to early 15th century) and Liu Bowen (1311–1375) during the early Ming Dynasty (1368–1644) described several types of rockets,^[377] one of them being a multistage rocket known as the 'huo long chu shui' or 'fire dragon issuing from the water' which, despite its name, was not launched from beneath the water from a primitive submarine but rather at near water-level maintaining a flat trajectory; defined as a two-stage rocket, it employed booster rockets that, when about to burn out of use, ignited a swarm of smaller rocket arrows fired from the front end of the missile shaped as a dragon's mouth.^[378]

N

• Nail polish: According to the book Chemical Composition Of Everyday Products, nail polish dates from 3000 BC and originates from China. Nail polish used during the Ming Dynasty was made from a mixture of egg whites, beeswax, dyes, gum arabic, and gelatin.^[379]
• Natural gas as a fuel: On tomb brick reliefs of Sichuan province dating to the Han Dynasty (202 BC - 220 AD), scenes of borehole drilling for mining projects are shown.^[380] They show towering derricks lifting liquid brine through bamboo pipes to the surface so that the brine could be distilled in evaporation pans over the heat of furnaces and produce salt.^[380] The furnaces were heated by natural gas brought by bamboo pipes, yet gas brought up from 610 m (2,000 ft) below the surface could cause an explosion if it was not properly mixed with oxygen first, so the Han-era Chinese built underground carburetor chambers and siphoned some of the gas off with exhaust pipes.^[380]
• Naval mine: The Huolongjing military manuscript written by Jiao Yu (fl. 14th to early 15th century) and Liu Bowen (1311–1375) also describes naval mines used at sea or on rivers and lakes; made of wrought iron and enclosed in an ox bladder, it was a timed device in that a burning joss sticks floating above the mine determined when the fuse was to be ignited; the text explicitly mentions that without air and doused in water the fuse would not burn, so the fuse was protected by a long waterproof tube made out of goat's intestine; a later model shown in Song Yingxing's (1587–1666) encyclopedia of 1637 shows the ox bladder replaced with a lacquered leather bag while the mine is ignited by a rip cord pulled from the shore to rotate a flint-and-steel firing mechanism.^[381]
• Negative numbers, symbols for and use of: In the Nine Chapters on the Mathematical Art compiled during the Han Dynasty (202 BC – 220 AD) by 179 AD and commented on by Liu Hui (fl. 3rd century) in 263,^[382] negative numbers appear as black rods and positive numbers as red rods in the Chinese counting rods system.^[383] Liu Hui also used slanted counting rods to denote negative numbers. Negative numbers denoted by a "+" sign also appear in the ancient Bakhshali manuscript of India, yet scholars disagree as to when it was compiled, giving a collective range of 200 to 600 AD.^[384] Negative numbers were known in India certainly by about 630 AD, when the mathematician Brahmagupta (598–668) used them. Negative numbers were first used in Europe by the Greek mathematician Diophantus (fl. 3rd century) in about 275 AD, yet were considered absurd in the West until The Great Art written in 1545 by the Italian mathematician Girolamo Cardano (1501–1576).
• Nickel silver: Nickel silver was first known and used in China.^[385] During the Qing Dynasty, it was "smuggled into various parts of the East Indies", despite a government ban on the export of nickel silver.^[386]

O

• Open-spandrel segmental arch bridge: The earliest known fully stone open-spandrel segmental arch bridge is the Zhaozhou Bridge in southern Hebei province, China, completed in 605 by the Sui Dynasty (581–618) engineer Li Chun.^[387][388] The bridge span is 37.5 m (123 ft) and the structure relatively light in weight due to the four semi-circular arch spandrels which allow for additional flood waters to pass through. Other Chinese bridges would be influenced by this design, such as the open-spandrel Yongtong Bridge of Zhaoxian, Hebei built in 1130, and the simple segmental arch Lugou Bridge built in 1698 (originally in 1189).^[389] The latter, located just west of Beijing and features eleven segmental arches.
• Oil well: The earliest record of an oil well dates from 347 AD in China.^[390] Petroleum was used in ancient China for "lighting, as a lubricant for cart axles and the bearings of water-powered drop hammers, as a source of carbon for inksticks, and as a medical remedy for sores on humans and mange in animals."^[391] The earliest illustrated depiction of an oil well dates to 1762 AD.^[391]

P

• Paper cup and paper napkin: Paper cups have been documented in imperial China, alongside paper napkins. Paper cups were known as chih pei and were used for the serving of tea.^[392] They were constructed in different sizes and colors, and were adorned with decorative designs. Paper napkins, or chih pha, accompanied tea cups and were folded into squares. Textual evidence of paper cups and napkins appears in a description of the possessions of the Yu family, from the city of Hangzhou.^[392]
• Papercutting: Papercutting is the art of cutting paper designs. The oldest surviving paper cut design dates from the 6th century Six Dynasties period and was found in present-day Xinjiang, China.^[393] Papercutting continued to be practiced during the Song and Tang Dynasties as a popular form of decorative art.^[393] Modern paper cutting has developed into a commercial industry. Papercutting remains popular as a folk art in contemporary China, especially during special events like weddings or the Chinese New Year.^[394]
• Paper lantern: The paper lantern is a lighting device made of paper. Early lanterns in China were constructed with silk, paper, or animal skin with frames made of bamboo or wood.^[395] One of the earliest descriptions of paper lanterns is found in records from Khotan, which describe a "mounting lantern" made of white paper.^[395]
• Pig iron: The earliest pig iron dates to the Zhou Dynasty. By the 5th century, archaeological evidence indicates that pig iron was melted to produce cast iron.^[142] In Europe, the process was not invented until the late medieval ages.^[396]
• Pinhole camera: The Greek philosopher Aristotle (384–322 BC) observed that the spaces between the leaves of trees acted as tiny pinholes which cast the image of a partial solar eclipse onto the ground.^[397] He also used a metal plate with a small pinhole to project an image of a solar eclipse onto the ground.^[397] The ancient Chinese philosopher Mozi (c. 470 BC – c. 391 BC)—founder of Mohism during the establishment of the Hundred Schools of Thought—lived just before the time of Aristotle and it was in his Mojing (perhaps compiled by his disciples) that a pinhole camera was described.^[398] The Mojing stated that the "collecting place" (pinhole) was an empty hole "like the sun and moon depicted on the imperial flags," where an image could be inverted at an intersecting point which "affects the size of the image."^[398] The Mojing seems to be in line with the Epicurean theory of light traveling into the eye (and not vice versa like in Pythagoreanism),^[399] since the Mojing states that the reflected light shining forth from an "illuminated person" becomes inverted when passing through the pinhole, i.e. "The bottom part of the man becomes the top part (of the image) and the top part of the man becomes the bottom part (of the image)."^[398] In his Book of Optics (1021), Ibn al-Haytham (965–1039) wrote of his experimentation with camera obscura, which was followed by Shen Kuo (1031–1095), the latter who alluded that the Tang Dynasty (618–907) author Duan Chengshi (died 863)—in his Miscellaneous Morsels from Youyang—described inverted images of Chinese pagodas.^[400]
• Playing cards: The first reference to the card game in world history dates no later than the 9th century, when the Collection of Miscellanea at Duyang, written by Su E (fl. 880), described the Wei clan (family of Princess Tongchang's husband) of the Tang Dynasty (618–907 AD) enjoying the "leaf game" in 868.^{[401][402][403]} The Yezi Gexi was a book on the card came which was allegedly written by a Tang woman and commented on by Chinese scholars in subsequent dynasties.^[404] In his Notes After Retirement, the Song Dynasty (960–1279) scholar Ouyang Xiu (1007–1072) asserted that playing card games existed since the mid Tang Dynasty and associated this invention with the simultaneous evolution of the common Chinese writing medium from paper rolls to sheets of paper that could be printed.^[402][404] During the Ming Dynasty (1368–1644), characters from popular novels such as the Water Margin were widely featured on the faces of playing cards.^[404] By the 11th century playing cards could be found throughout the Asian continent.^[405] Playing cards were some of the first printed materials in Europe, appearing by the 14th century (i.e. in Spain and Germany in 1377, in Italy and Belgium in 1379, and in France in 1381) and produced by European woodblock printing before the innovation of the printing press by Johannes Gutenberg (c. 1400–1468).^[405]
• Pontoon bridge: In ancient China, the Zhou Dynasty Chinese text of the Shi Jing (Book of Odes) records that King Wen of Zhou was the first to create a pontoon bridge in the 11th century BC. However, the historian Joseph Needham has pointed out that in all likely scenarios, the temporary pontoon bridge was invented during the 9th or 8th century BC in China, as this part was perhaps a later addition to the book (considering how the book had been edited up until the Han Dynasty, 202 BC–220 AD). Although earlier temporary pontoon bridges had been made in China, the first secure and permanent ones (and linked with iron chains) in China came first during the Qin Dynasty (221 BC–207 BC). The later Song Dynasty (960–1279 AD) Chinese statesman Cao Cheng once wrote a description of the early pontoon bridges in China.^[406]

During the Eastern Han Dynasty (25–220 AD), the Chinese created a very large pontoon bridge that spanned across the width of the Yellow River. There was also the rebellion of Gongsun Shu in 33 AD, where a large pontoon bridge with fortified posts was constructed across the Yangtze River, eventually broken through with ramming ships by official Han troops under Commander Cen Peng. During the late Eastern Han into the Three Kingdoms period, during the Battle of Chibi in 208 AD, the Prime Minister Cao Cao once linked the majority of his fleet together with iron chains, which proved to be a fatal mistake once he was thwarted with a fire attack by Sun Quan's fleet. The armies of Emperor Taizu of Song had a large pontoon bridge built across the Yangtze River in 974 in order to secure supply lines during the Song Dynasty's conquest of the Southern Tang.^[407]

• Porcelain: Although glazed ceramics existed beforehand, S.A.M. Adshead writes that the earliest type of vitrified, translucent ceramics that could be classified as true porcelain was not made until the Tang Dynasty (618–907).^[408] Nigel Wood states that true porcelain was manufactured in northern China from roughly the beginning of the Tang Dynasty in the 7th century, while true porcelain was not manufactured in southern China until about 300 years later, during the early 10th century.^[409]
• Pound lock: Indirect evidence suggests that pound locks may have been used in antiquity by the Ptolemaic Greeks and the Romans.^[410] In China, although the one gate canal flash lock existed beforehand, the two-gate pound lock was invented in 984 by an official of Huainan and engineer named Qiao Weiyo, during the early Song Dynasty (960–1279), so that ships could safely travel along canal waterways having gated and segmented chambers where water levels could be regulated.^[411][412] The economic and transport benefits of this innovation were described by the polymath official and inventor Shen Kuo (1031–1095) in his Dream Pool Essays.^[411]
• Puppet theater, waterwheel-powered: The mechanical toys of Roman Egypt, especially the weight-driven puppet theater of Heron of Alexandria (c. 10–70 AD), are well known and discussed by historians such as Beck, Prou, and de Rochas d'Aiglun.^[413] In China, Zhang Heng (78–139) wrote of plays with artificial fish and dragons, while a 6th-century text Xijing Zaji states that when Liu Bang (reigned as Emperor Gaozu of Han from 202–195 BC) came upon the treasury of the deceased Qin Shihuang (r. 221–210) in 206 BC, he found an entire mechanical orchestra of 1 m (3 ft) tall puppets dressed in silk and playing mouth organs, all powered by pulling ropes and blowing into tubes.^[414] As written in the Records of the Three Kingdoms, the engineer Ma Jun (fl. 220–265)—already associated with the differential gear system of the south-pointing chariot—invented a mechanical theater powered by a rotating wooden waterwheel for the entertainment of Emperor Ming's (r. 226–239 AD) court.^[414] With the waterwheel in motion, a number of mechanical puppets performed tricks, such as singing girls who played music and danced, other puppets who would beat drums and sound flutes when one puppet entered the scene, puppets dancing on balls, throwing swords, hanging upside down on rope ladders, etc.^[414] Other mechanical puppets dressed as government officials did tasks in their offices, puppets dressed as laborers did jobs of pounding and grinding (trip hammer and millstone), while others watched cockfighting, all moving simultaneously.^[414] Water-powered puppet theaters in the tradition of Ma Jun were created in later dynasties as well.^[415]

Q

• Qingbai ware: A type of pottery developed during the Song Dynasty. Qingbai ware has a white body and a bluish-green glaze tint. It was made using white porcelain, which was then overlaid with a tinted glaze. Much of Qingbai ware was used by commoners, which was unusual during this period, as most pottery from this era was strictly for imperial use. Qingbai ware is Ding ware which has achieved true translucency, achieved by using kaolin and a fine-grained porcelain stone that supported thin-walled vessels. Kaolin, one of the most common clay minerals, gives the porcelain the true white color and allows for minimal shrinking of the vessel. Qingbai was popular between the 10th and 13th centuries.^[416]

R

• Raised-relief map: The raised-relief map may have existed in China since the 3rd century BC, if the accounts in the Records of the Grand Historian (by Sima Qian, 91 BC) about Qin Shi Huang's (r. 221–210 BC) tomb prove correct (if it is excavated).^[343] It is known that Ma Yuan (14 BC – 49 AD) created a raised-relief map in 32 AD made out of rice, a type of map described in detail during the Tang Dynasty (618–907) by Jiang Fang in his Essay on the Art of Constructing Mountains with Rice (c. 845).^[417] Xie Zhuang (421–466) of the Liu Song Dynasty (420–479) created a 0.93 m² (10 ft²) wooden raised-relief map of the empire (showing mountains and rivers) which could be taken apart and pieced together like a giant jigsaw puzzle. Shen Kuo also created his own raised-relief map using sawdust, wood, beeswax, and wheat paste.^[418][419]
• Restaurant menu: During the early Song Dynasty (960–1279), urban shopkeepers of the merchant middle class often had little time to eat at home, so they ventured out to eat at a variety of places such as temples, taverns, tea houses, food stalls, and restaurants which provided business for nearby brothels, singing-girl houses, and drama theatres; this along with traveling foreigners and Chinese who migrated to urban centers from regions with different cooking styles encouraged a demand for a variety of flavors served at urban restaurants, giving rise to the menu.^[420][421]
• Revolving bookcase: Revolving bookcases, known as zhuanluntang, have been documented in ancient China, and its invention is credited to Fu Xi in 544.^[422] Descriptions of revolving bookcases have been found in 8th- and 9th-century Chinese texts. Revolving bookcases were popularized in Buddhist monasteries during the Song Dynasty under the reign of Emperor Taizu, who ordered the mass printing of the Buddhist Tripiṭaka scriptures.^[422] An illustration of a revolving bookcase is depicted in Li Jie's architectural treatise the Yingzao Fashi.^[422]
• Rocket bombs, aerodynamic wings and explosive payloads: The first known rockets fitted with aerodynamic wings are described as the 'flying crows with magic fire' in the oldest strata of the Huolongjing (early-to-mid 14th century), compiled by Jiao Yu and Liu Bowen during the early Ming Dynasty (1368–1644).^[423] The body of the rocket was shaped like a bird (specifically a crow), packed with gunpowder, and made of bamboo laths forming a long basketwork frame that was reinforced with glued paper.^[424] A decorative head and tail were attached to the front and back ends, while the wings were nailed to the sides.^[424] Under each wing were two slanting rockets to propel the weapon; a main fuse was lit that ignited a fourfold fuse connected to each rocket and running through a drilled hole in the back of the bird.^[424] The book then claims that the rocket, after being launched high into the air and aimed at encampments or enemy boats, automatically produced an explosion upon impact that could be seen from considerably long distances.^[425]
• Rocket launcher: The earliest rocket launchers documented in imperial China launched fire arrows with launchers constructed of wood, basketry, and bamboo tubes.^[426] The rocket launchers divided the fire arrows with frames meant to keep the arrows separated, and were capable of firing multiple arrow rockets at once. Textual evidence and illustrations of various early rocket launchers are found in the 11th-century Northern Song Dynasty text Wujing Zongyao. The Wujing Zongyao describes the "long serpent" rocket launcher, a rocket launcher constructed of wood and carried with a wheelbarrow, and the "hundred tiger" rocket launcher, a rocket launcher made of wood and capable of firing 320 rocket arrows.^[427] The text also describes a portable rocket arrow carrier consisting of a sling and a bamboo tube.^[428]
• Rope dart: The rope dart is a weapon used in Chinese martial arts. It consists of a long rope with a metal dart attached at the end. The dart can be thrown as a long range weapon while the rope is used to pull the dart backwards. The first written description of the rope dart is dated from the Tang Dynasty (618 – 907 AD).^[429]
• Rotary fan, manual and water-powered: For purposes of air conditioning, the Han Dynasty craftsman and engineer Ding Huan (fl. 180 AD) invented a manually operated rotary fan with seven wheels that measured 3 m (10 ft) in diameter; in the 8th century, during the Tang Dynasty (618–907), the Chinese applied hydraulic power to rotate the fan wheels for air conditioning, while the rotary fan became even more common during the Song Dynasty (960–1279).^[430][431] The first rotary fan used in Europe was for mine ventilation during the 16th century, as illustrated by Georg Agricola (1494–1555).^[432]
• Rudder, stern-mounted and vertical axial: Lawrence V. Mott, who defines a steering oar as a rudder, states the ancient Egyptian use of stern-mounted rudders can be traced back to the 6th dynasty (2350–2200 BC).^[433] Mott states that the method of attachment for rudders in the Arab, Chinese, and European worlds differed from each other, leading him to doubt the spread of the Chinese system of attachment by socket-and-jaws or block and tackle (versus European pintle-and-gudgeon invented by c. 1180 AD).^[433][434] In regards to Mott's definition of a steering oar as a rudder, Joseph Needham, Richard Lefebvre des Noëttes, K.S. Tom, Chung Chee Kit, S.A.M. Adshead, Paul Johnstone and Sean McGrail state that a steering oar is not a rudder; the steering oar has the capacity to interfere with handling of the sails (limiting any potential for long ocean-going voyages) while it was fit more for small vessels on narrow, rapid-water transport; the rudder did not disturb the handling of the sails, took less energy to operate by its helmsman, was better fit for larger vessels on ocean-going travel, and first appeared in China.^{[149][434][435][436][437]} Leo Block writes of the use of the steering oar in the ancient Mediterranean world (specifically in regards to the Phoenicians, 1550–300 BC): "A single sail tends to turn a vessel in an upwind or downwind direction, and rudder action is required to steer a straight course. A steering oar was used at this time because the rudder had not yet been invented. With a single sail, a frequent movement of the steering oar was required to steer a straight course; this slowed down the vessel because a steering oar (or rudder) course correction acts like a break."^[438] The oldest depicted rudders at the back of a ship, without the use of oars or a steering oar, comes from several ceramic models of Chinese ships made during both the Western and Eastern eras of the Han Dynasty (202 BC – 220 AD).^{[149][439][440][441]} According to the scholars Zhang Zunyan and Vassilios Christides, there is literary evidence to suggest that the axial stern rudder existed in China since the 1st century BC,^[442] while Gang Deng asserts the first reference was made in the Huainanzi of the 2nd century BC,^[441] and K.S. Tom says the first clear reference dates to the 5th century AD.^[149] However, K.S. Tom points to the fact that all Chinese pottery models of ships before this Guangzhou tomb model show steering oars instead of a rudder, which he states is strong evidence for the rudder's invention only by the 1st century AD.^[443] Jacques Gernet states that while the Chinese had invented the rudder in the 1st century AD, it was not completely fixed to the sternpost of Chinese ships until the end of the 4th century.^[444] The bulkhead ship design of the junk, which appeared roughly the same time as the rudder, provided the essential vertical components for the hinged axial rudder.^[338] Deng points out that an Eastern Han (25–220) model distinctly shows a rudder located in its own separate cabin, suggesting that helmsmanship had already become an established profession.^[441] Following the invention of the balanced rudder pivoted on an axis, Tom and Deng state that the Chinese then innovated the fenestrated rudder by the Song Dynasty (960–1279), with deliberate puncturing and boring out of holes in shapes such as diamonds, which, according to Tom, made the rudder "easier to steer, reduced turbulence drag, did not affect efficiency and was hydrodynamically sound."^[441][445]

S

A replica of Zhang Heng's (78–139 AD) seismometer that employed a pendulum sensitive to inertia of ground tremors; while placed in Luoyang in 133, it detected an earthquake 400 to 500 km (250 to 310 mi) away in Gansu

A sancai-glazed horse statue from the Tang Dynasty (618–907) showing a rider's stirrup connected to the saddle

The Luding Bridge in Sichuan, an iron-chain suspension bridge

A page of The Classic of Tea by the Tang connoisseur of tea, Lu Yu (733–804)

Tofu in miso soup; the Chinese invented tofu as early as the 2nd century BC during the Han Dynasty (202 BC – 220 AD) if the traditional accounts about Liu An are correct.

A wall mural of Li Xian's tomb at Qianling Mausoleum (dated 706 AD), where the tomb murals and structural designs corresponded with the appearances and layouts, respectively, of actual residences where the tomb occupants had once lived during the Tang Dynasty

A Chinese Song Dynasty naval river ship with a Xuanfeng traction trebuchet catapult, taken from the Wujing Zongyao, 1044 AD

Hydraulic-powered trip hammers, from a Ming Dynasty encyclopedia published in 1637 by Song Yingxing (1587–1666)

An ornate bronze bell belonging to Duke Mu of Qin (d. 621 BC) from the Spring and Autumn period (722–481 BC)

• Seismometer: The official, astronomer, and mathematician Zhang Heng (78–139) of the Han Dynasty (202 BC – 220 AD) invented the first seismometer in 132, a large metal urn-shaped instrument which employed either a suspended pendulum or inverted pendulum acting on inertia (i.e. ground tremors from earthquakes) to dislodge a metal ball by a lever trip device; this ball would fall out of dragon-shaped metal mouth into the corresponding metal toad mouth indicating the exact cardinal direction of where a distant earthquake had occurred in order for the state to send swift aid and relief to the affected regions; several subsequent recreations of his device were employed by Chinese states up until the Tang Dynasty (618–907), when use of the device fell into obscurity, a fact noted even by the writer Zhou Mi around 1290, during the Yuan Dynasty (1271–1368).^{[445][446][447][448][449][450][451][452]}
• South-pointing chariot: Although the claim of Wei Dynasty statesman Ma Jun (fl. 220–265) that the south-pointing chariot was first invented by the mythological Yellow Emperor are dubious, his south-pointing chariot was successfully designed and tested in 255 AD with many later models recreated in subsequent dynasties; this device was a wheeled vehicle with differential gears that ensured a mounted wooden figurine would always point in the southern direction no matter how the vehicle turned, in essence a non-magnetic compass.^{[453][454][455]} The Book of Song written in the 6th century states that the device was successfully reinvented by the mathematician and astronomer Zu Chongzhi (429–500) during the Liu Song Dynasty (420–479).^[456] The Japanese historical text Nihon Shoki, compiled by 720, states that the device was crafted and presented as a gift to Emperor Tenji (661–672) on two different occasions (658 and 666) by the Tang Dynasty (618–907) Chinese Buddhist monks Zhi Yu and Zhi You.^[457] The wheeled vehicle device was described in intricate detail in the historical text covering the Song Dynasty (960–1279), i.e. the Song Shi (compiled 1345); for example, it revealed the number of gear teeth on each mechanical gear wheel, the diameter of each gear wheel, and how these gear wheels were properly positioned.^[458]
• Steel made from cast iron through oxygenation: The earliest known production of steel is a piece of ironware excavated from an archaeological site in Anatolia (Kaman-Kalehoyuk) and is about 4,000 years old.^[459] Other ancient steel comes from East Africa, dating back to 1400 BC.^[460] In the 4th century BC steel weapons like the Falcata were produced in the Iberian Peninsula, while Noric steel was used by the Roman military.^[461] The Chinese, who had been producing cast iron from the late Spring and Autumn period (722–481 BC), produced steel by the 2nd century BC through a process of decarburization, i.e. using bellows to pump large amounts of oxygen on to molten cast iron.^[252][462] This was first described in the Han Dynasty (202 BC – 220 AD) book Huainanzi, compiled by scholars under Prince Liu An (179–122 BC). For steel, they used both quenching (i.e. rapid cooling) and tempering (i.e. slow cooling) methods of heat treatment. Much later, the American inventor William Kelly (1811–1888) brought four Chinese metallurgists to Eddyville, Kentucky in 1845, whose expertise in steelmaking influenced his ideas about air injection to reduce carbon content of iron; his invention anticipated the Bessemer process of Henry Bessemer (1813–1898).^[463]
• Stir frying: Stir frying is a Chinese cooking technique used for preparing food in a wok. It originates from the Han Dynasty, but did not fully develop until the Song Dynasty.^[464] Although there are no surviving records of Han Dynasty stir frying, archaeological evidence of woks and the tendency to slice food thinly indicate that the technique was likely used for cooking.^[465] It was not until the Ming Dynasty that stir frying was popularized as primary cooking method of Chinese cuisine.^[466] Stir frying was brought to America by early Chinese immigrants, and has been used for non-Asian cuisines.^[467]
• Stirrup: There are authors who point out that it is unclear whether the stirrup was invented by northern nomads or the sedentary Chinese.^[468] Liu Han (1961) credited the invention of the stirrup to nomadic invaders of northern China.^[469] Archaeologial evidence shows that horse riders in India had a small loop for a single toe to be inserted by roughly the 1st century AD.^[470] However, the first true depiction of the stirrup is featured on a Jin Dynasty (265–420) Chinese tomb figurine dated 302 AD, yet this was a single stirrup and was perhaps used only for initially mounting the horse.^[471] The first validated depiction of a rider with a pair of saddle stirrups for both feet comes from a Jin Chinese tomb figurine dated 322.^[471] The first actual specimens of stirrups comes from a Chinese tomb in southern Manchuria that is dated 415.^[471] The stirrup was not widely used by Chinese cavalry until the 5th century.^[470][472] By the 6th century, the use of the stirrup had spread as far west as the Byzantine Empire, where both the stirrup and Celtic horseshoe were adopted.^[470]
• Suspension bridge using iron chains: Although there is evidence that many early cultures employed the use of suspension bridges with cabled ropes, the first written evidence of iron chain suspension bridges comes from a local history and topography of Yunnan written in the 15th century, which describes the repair of an iron chain bridge during the reign of the Yongle Emperor (r. 1402–1424); although it is questionable if Ming Dynasty (1368–1644) Chinese claims that iron chain suspension bridges existed since the Han Dynasty, their existence in the 15th century predates that of anywhere else.^[473] K.S. Tom mentions this same repaired Ming suspension bridge described by Needham, but adds that recent research has revealed a document which lists the names of those who allegedly built an iron chain suspension bridge in Yunnan around the year 600 AD.^[474]

T

• Tangram: The tangram is a dissection puzzle consisting of seven flat shapes, which are put together to form shapes. The objective of the puzzle is to form a specific shape using all seven pieces, which may not overlap. The game is reputed to have been invented in China during the Song Dynasty,^[475] and was popularized in Europe and America during the 19th century.^[476] The word tangram is likely derived from two words, the Chinese word tang, referring to the Chinese Tang Dynasty, and the Greek word gramma, a synonym of "graph".^[477]
• Tea: The tea plant is indigenous to western Yunnan;^[478] by the mid 2nd millennium BC, tea was being consumed in Yunnan for medicinal purposes.^[479] Tea drinking was already an established custom in the daily life in this area as shown by the Contract with a Slave, written by Wang Bao in 59 BC.^[480] This written record also reveals that tea was processed and used as a drink instead of a medicinal herb, emerged no later than the 1st century BC.^[481] Early Chinese tea culture began from the time of Han Dynasty (202 BC – 220 AD) to the Southern and Northern Dynasties (420–589) when tea was widely used by Chinese gentry, but only took its initial shape during the Tang Dynasty (618–907).^[482]
• Teapot: The teapot was invented during the Yuan Dynasty, tea preparation in previous dynasties did not utilize a teapot.^[483] In the Tang Dynasty, a cauldron was used to boil grounded tea, which was served in bowls. Song Dynasty tea was made by pouring water boiled using a kettle into a bowl with finely ground tea leaves. A brush was then used to stir the tea. The innovation of the teapot, a vessel that steeps tea leaves in boiling water, occurs during the late Yuan dynasty. Written evidence of a teapot appears in the Yuan Dynasty text, Jiyuan Conghua, which describes a teapot that the author, Cai Shizhan, bought from the scholar Sun Daoming. By the Ming Dynasty, teapots were widespread in China.^[483]
• Thyroid hormones to treat goiters: In 239 BC, Master Lu's Spring and Autumn Annals stated that where water is too light, people suffer widespread baldness and goiter.^[484] It was not until the 1860 that Gaspard Adolphe Chatin (1813–1901) linked goiter with the lack of iodine in soil and water; iodine was discovered in the thyroid gland in 1896 by Eugen Baumann, while thyroid extract was used to treat patients in 1890. Long before this the Tang Dynasty (618–907) physician Zhen Quan (d. 643 AD), in his Old and New Tried and Tested Prescriptions, stated that the thyroid glands taken from gelded rams were used to treat patients with goiter; the thyroid hormones could be swallowed in pill form (the body of the pill made from crushed jujube pulp) or as a solid thyroid gland with the fat taken off.^[484] The Pharmacopoeia of the Heavenly Husbandman asserted that iodine-rich sargassum was used to treat goiter by the 1st century BC (Ge Hong, 284–364, also suggested using a tincture derived from sargassum seaweed in about 340 AD),^[485] a treatment later recorded in the West by Roger of Palermo in his Practica Chirurgiae of 1180 AD.
• Tofu: Although both popular tradition and Song-dynasty scholars like Zhu Xi (1130–1200 AD) credit the invention of tofu—along with soymilk— to Liu An (179–122 BC), a Han-Dynasty King of Huainan, no mention of tofu is found in the extant Huainanzi (compiled under Liu An).^{[486][487][488]} The earliest known mention of tofu was made in Records of the Extraordinary (Qingyi lu 清異錄), which reported that tofu was sold at Qingyang (Anhui).^[489] The earliest explanation of how to make tofu is found in the Bencao Gangmu, written by Li Shizhen (1518–1593).^[488] According to Liu Keshun (1999), Liu An's process for making tofu was essentially the same as today.^[490]
• Toilet paper: Toilet paper was first mentioned by the official Yan Zhitui (531–591) in the year 589 during the Sui Dynasty, with full evidence of continual use in subsequent dynasties.^[491][492] By the mid 14th century during the Yuan Dynasty (1271–1368), it was written that ten million packages of 1,000 to 10,000 sheets of toilet paper were manufactured annually in Zhejiang province alone.^[491]
• Traction trebuchet: The earliest type of trebuchet catapult was the traction trebuchet, developed first in China by the 5th or 4th century BC, the beginning of the Warring States period (403–221 BC); to operate the trebuchet, a team of men pulled on ropes attached to the butt of the shorter segment of a long wooden beam separated by a rotating axle fixed to a base framework, allowing the longer segment of the beam to lunge forward and use its sling to hurl a missile; by the 9th century a hybrid of the traction and counterweight trebuchet, employing manpower and a pivoting weight, was used in the Middle East, Mediterranean Basin, and Northern Europe; by the 12th century, the full-fledged counterweight trebuchet was developed under the Ayyubid dynasty of Islamic Syria and Egypt (described by Mardi bin Ali al-Tarsusi) and used in the Third Crusade; by the 13th century, the counterweight trebuchet found its way into Song Dynasty (960–1279) China via the Mongol invaders under Kublai Khan (r. 1260–1294) who used it in the Siege of Xiangyang (1267–1273).^{[493][494][495]}
• Trip hammer: The ancient Chinese used pestle and mortar to pound and decorticate grain, which was superseded by the treadle-operated tilt hammer (employing a simple lever and fulcrum) perhaps during the Zhou Dynasty (1122–256 BC) but first described in a Han Dynasty (202 BC – 220 AD) dictionary of 40 BC and soon after by Yang Xiong (53 BC – 18 AD) in his Fangyan dictionary written in 15 BC; the next stage in this evolution of grain-pounding devices was to apply hydraulic power, which the author Huan Tan (43 BC – 28 AD) mentioned in his Xinlun of 20 AD, although he also described trip hammers powered by the labor of horses, oxen, donkeys, and mules.^[496] After Huan Tan's book was written, numerous references to trip hammers powered by waterwheels were made in subsequent Chinese dynasties and in Medieval Europe by the 12th century.^[497] However, trip hammers were also attested by both literary (Pliny, Natural History 18.97) and archaeological evidence in fairly widespread use in the Roman Empire by the 1st century AD.^[498][499]
• Tuned bells: The earliest complete set of tuned bells, sixteen in all, were found in Tomb 8 of Marquis Su of Jin at Qucun, southern Shanxi.^[500] The tomb has been dated by AMS radiocarbon techniques to 815–786 BC, during the period of the Zhou Dynasty.^[501] Of the sixty-four bronze bells found in the tomb of Marquis Yi of Zeng interred by 433 BC, forty-seven of them produce two notes with minor third intervals while sixteen produce two notes with major third intervals.
• Tung oil: The tung oil tree originates in southern China and was cultivated there for tung oil, but the date of cultivation remains unknown.^[502] During the Song Dynasty, tung oil was used for waterproofing on ships.^[503] Tung oil is etymologically derived from the Chinese tongyou.^[504]

U

• Underwater salvage operation: In 219 BC, Qin Shihuang (r. 221–210 BC) assembled an expedition consisting of a thousand people for the salvage of the Nine Tripod Cauldrons. The tripods were considered important artifacts, Chinese legends credit a Xia dynasty emperor with their construction. The tripods were lost in Sishui River in present-day Anhui Province. The salvage attempt was ultimately unsuccessful. Carvings in Han Dynasty tombs depict the salvage attempt.^[505] In the 11th century AD, a successful underwater salvage operation in Song China (960–1279) would employ the use of buoyancy.^[506] The Chinese understood the concept of buoyancy by at least the 3rd century AD; the short-lived child prodigy Cao Chong (196–208) weighed a large elephant by placing it on a boat in a pond and measuring the rise of the water level, then matching this weight with a boat loaded with numerous heavy objects which could be measured separately.^[507] Between 1064 and 1067, the Puchin Bridge near Puchow, a floating bridge built some 350 years earlier across the Yellow River, was destroyed in a flood.^[508] This bridge was made of boats secured by iron chains which were attached to eight different cast iron statues located on each river bank, cast in the shape of recumbent oxen.^[509] The flood pulled the oxen from the sandy banks into the river, where they sunk to the bottom; after this loss, the local officials issued a proclamation for submission of ideas on how to recover the statues.^[508] The plan of the Buddhist monk Huaibing was accepted, which is described in the text Liang Chi Man Chih of 1192, "he used two huge boats filled with earth, cables from them being made fast to the oxen in the river bed (by the drivers). Hooks and a huge counterweight lever were also used. Then the earth in the boats was gradually taken away so that the boats floated much higher and the oxen were lifted off the river bottom."^[510]
• Unmanned hot air balloons: The sky lantern is an early unmanned hot air balloon. The general Zhuge Liang is credited with its invention, and reportedly used it during military campaigns. According to Needham, hot air balloons have been used in China since the 3rd century BC.^[511] In 1783, Joseph-Michel and Jacques-Etienne Montgolfier took part in the first manned hot air balloon flight.^[512]

W

Chinese rotary fan winnowing machine, from an encyclopedia published in 1637 by Song Yingxing

Xiangqi board game

• Wheat gluten: The earliest description of wheat gluten comes from 6th century China.^[513] It was widely consumed by the Chinese as a substitute for meat, especially among adherents of Buddhism.^[514] The oldest reference to wheat gluten appears in the Qimin Yaoshu, a Chinese agricultural encyclopedia written by Jia Sixie in 535. The encyclopedia mentions noodles prepared from wheat gluten called bo duo. Wheat gluten was known as mian jin by the Song dynasty (960–1279).^[513]
• Winnowing fan: Contemporary to the rotary air conditioning fan invented by Ding Huan (fl. 180 AD) is a pottery tomb model of a crank-operated rotary winnowing fan from the Han Dynasty, used for separating chaff from grain.^[515][516] The winnowing fan was first described during the Tang Dynasty by Yan Shigu (581–645), in his commentary on the Jijiupian dictionary written earlier in 40 BC by Shi Yu; it was also mentioned in a poem by the Song Dynasty artist Mei Yaochen in about 1060.^[517] The earliest known drawn illustration of the winnowing fan comes from the Book of Agriculture published in 1313 by Wang Zhen (fl. 1290–1333).^[518]
• Wrapping paper and paper envelope: The use of wrapping paper is first documented in ancient China, where paper was invented in the 2nd century BC.^[519] In the Southern Song dynasty, monetary gifts were wrapped with paper, forming an envelope known as a chih pao. The wrapped gifts were distributed by the Chinese court to government officials.^[520] In the Chinese text Thien Kung Khai Wu, Sung Ying-Hsing states that the coarsest wrapping paper is manufactured with rice straws and bamboo fiber.^[521] Although the Hall brothers Rollie and Joyce Hall, founders of Hallmark Cards, did not invent gift wrapping, their innovations led to the development of modern gift wrapping. They helped to popularize the idea of decorative gift wrapping in the 20th century, and according to Joyce Hall, "the decorative gift-wrapping business was born the day Rollie placed those French envelope linings on top of that showcase."^[522]

X

• Xiangqi (See also: List of Chinese inventions#L – Liubo): The exact origins of the Chinese chess board game known as xiangqi are ambiguous. Historian David H. Li asserts that it was first invented by Han Xin (d. 196 BC), a renowned military general of the early Han Dynasty who fell victim to a purge instigated by Empress Lü Zhi (d. 180 BC).^[523] Li states that it was revived under a different, camouflaged name of xiangxi by Emperor Wu of Northern Zhou (r. 561–578), which to this day has made the two terms synonymous and interchangeable for the same game.^[524]

Z

• Zoetrope: Historian Joseph Needham described several ancient Chinese devices which he classified as "a variety of zoetrope",^[525] but his use of that term appears to have been very broad and unconventional. There is some evidence that a device capable of displaying moving images existed amongst the items of the treasury of the deceased Qin Shi Huang (r. 221–210 BC) of the Qin Dynasty.^[526] A magician named Shao Ong who staged a seance for Emperor Wu of Han (r. 141–87 BC) may have used such a device in his performance of 121 BC.^[525] Another device that Needham included in the same category comes, according to his dating, from the late Han Dynasty, when the artisan Ding Huan (丁緩) made a 'nine-storied hill-censer' around 180 AD.^[526] This featured figures of birds and other animals which moved when the lamp was lit; the convection of rising hot air currents caused the vanes at the top canopy of the lamp to spin, while the painted figures on paper attached to the side of the cylinder gave the impression that they were in movement.^[526]

Modern (1912-present)

• Artemisinin, Tu Youyou, Project 523, Dihydroartemisinin.
• Car fueled by charcoal: In 1931, Tang Zhongming created an internal combustion engine powered by charcoal and mounted it in an automobile.^[527]
• Carbon aerogel: In 2013, scientists at Zhejiang University broke the world record for the world's lightest substance, a carbon aerogel weighing in at 0.16 mg/cc.^[528]
• Cure of a solid cancer: In 1956, Min Chiu Li, who was educated and worked in the USA after leaving China because of the communist takeover, and Roy Hertz, demonstrated that systemic chemotherapy could result in the cure of a widely metastatic malignant disease by his use of methotrexate to cure women of choriocarcinoma.^[529][530]
• Electronic cigarette: Hon Lik, a Chinese pharmacist, is credited with the invention of the modern electronic cigarette. In 2003, he came up with the idea of using a piezoelectric ultrasound-emitting element to vaporise a pressurized jet of liquid containing nicotine diluted in a propylene glycol solution.This design produces a smoke-like vapour that can be inhaled and provides a vehicle for nicotine delivery into the bloodstream via the lungs. He also proposed using propylene glycol to dilute nicotine and placing it in a disposable plastic cartridge which serves as a liquid reservoir and mouthpiece.^[531]
• Hydrogen bicycle: In 2007, Pearl (SPHPST.Co), unveiled at the 9th China International Exhibition on Gas Technology the first hydrogen powered bicycle, PHB. It uses a proton exchange membrane fuel cell to generate power.
• Non-invasive prenatal diagnostic testing for Down's Syndrome: Previously, women underwent invasive testing such as amniocentesis or chorionic villus sampling (CVS). This new maternal blood test has the potential to reduce the number of women referred for invasive testing for Down's syndrome by 98 percent. Developed by Chinese researchers in Hong Kong in 2008, this is hailed as a breakthrough.^[532]
• Passenger drone: The world's first passenger drone, a drone capable of carrying human cargo, Ehang 184 was unveiled at the Computer Electronics Show (CES) 2016 by Chinese entrepreneurs.^[533][534]
• Radar-absorbing active stealth material: A material called an "active frequency selecting surface" (AFSS) - a thin layer of material covered with a substance used in printed circuit boards that can be "tuned" to absorb microwaves at a range of frequencies. The material could be used to reduce the radar cross-section of whatever it covers, including stealth aircraft, making it possible to reactively change the absorption of radar signals of different types.^[535]
• Synthetic bovine insulin: In 1965, Chinese scientists synthesized bovine insulin, with the "same crystalline form and biological activities as natural insulin."^[536][537] The project began in 1958, and is considered one of the "first proteins ever synthesized in vitro."^[538]
• Single-mode optical fiber: Professor Huang Hongjia of the Chinese Academy of Sciences, developed coupling wave theory in the field of microwave theory. He led a research team that successfully developed Single-mode optical fiber in 1980.^{[539][540][541][542]}
• Stem cell educator therapy: Chinese and US researchers have produced remarkable results for this new treatment of obtaining stem cells from human cord blood to "re-educate" misbehaving immune cells. This result was published in the open-access journal BMC Medicine in January 2012, and offers hope for Type 1 diabetics and potentially may also be used to treat other auto-immune diseases if the approach lives up to early promise.^[543][544]
• Turning Urine Samples into Brain Cells: This new technique of reprogramming ordinary cells present in urine into immature brain cells that can form multiple types of functioning neurons and glial cells was developed by Chinese researchers in China, and was published in the scientific journal Nature Methods in December 2012. Instead of using retrovirus, they used vectors which the researchers say is a breakthrough^[545] This does not involve embryonic stem cells which come with serious drawbacks when transplanted, such as the risk of developing tumours. This technique makes the procedure of generating Induced pluripotent stem cells far easier and non-invasive, as the cells can be obtained from a urine sample instead of a blood sample or biopsy. This research proves human excreta could be a powerful source of cells to study disease, bypassing some of the problems of using stem cells, and could be useful for research studying the cellular mechanisms of neurodegenerative conditions such as Alzheimer's and Parkinson's and for testing the effects of new drugs that are being developed to treat them.^{[546][547][548]}

See also