The character Fú (福, Unicode U+798F) meaning "good fortune" or "happiness" is represented both as a Chinese ideograph, but also at times, pictorially, in one of its homophonous forms, most popularly as a bat, but also sometimes as the cereal "bran".
Mounted Fú are a widespread Chinese tradition associated with Chinese New Year and can be seen on the entrances of many Chinese homes worldwide. The characters are generally printed on a square piece of paper or stitched in fabric. The practice is universal among Chinese people regardless of socioeconomic status, and dates to at least the Song Dynasty (AD 960 - 1279).
When displayed as a Chinese ideograph, Fú is almost universally displayed upside-down. The reason 'why' is based on a wordplay: in nearly all varieties of Chinese: the words for "upside-down" and "to arrive" are homophonous or nearly homophonous. Therefore, the phrase an "upside-down Fú" sounds either identical or nearly identical to the phrase "Good luck arrives". Pasting the character upside-down on a door or doorpost thus translates into a wish for prosperity to descend upon a dwelling.
Another story states that posting the character upside-down originates with the family of a 9th-century prince of the Qing Dynasty. The story states that on one Chinese New Year's Eve (or Chuxi, Chinese: 除夕), the prince's servants played a practical joke by pasting fu characters throughout his royal dwelling. One illiterate servant inadvertently placed the characters upside-down. The prince was said to have been furious upon seeing the characters, but a quick-thinking servant humbly calmed the prince by saying that the occurrence must have been a sign of prosperity "arriving" upon his household by using the above wordplay.
The character Fú (福) meaning "good fortune" or "happiness" is also represented in Chinese art by its homophone "bat" (fú 蝠), making bats the most ubiquitous of all Chinese symbols with the same symbolic meaning as the ideograph meaning "good fortune". [1] A less common representation is bran (fúzi 麸子), not only because "depictions of grain have been used throughout Chinese history to represent fecundity[2] but also in combination with other grains with related homophonous word-plays (for example, lì which can mean either "grain" 粒 or "profit" 利).[3]
Representations of the character Fú (福) in various forms of calligraphy and seal characters as papercuts or posters represents the desire that one's good luck will be expansive and come in many forms. Chinese textiles and ceramics may also represent this felicitous message by portraying 100 bats in flight.