Wang Jian (Chinese: 王翦; pinyin: Wǎng jiǎn;) (year of birth and death unknown), a military leader of Qin (state) in the Warring States Period. He was born in Guanzhong county, city of Pinyang, Dongxiang village (now as the northeast of Fuping in Shǎnxī Province).
He led the Qin army in seizing Handan, the capital city of the State of Zhao; Defeated Yan (state), Zhao (state) and Chu (state). He along with Bai Qi, Lian Po and Li Mu were called the most prestigious 4 generals in the Warring States Period.
In 225 BC, only three kingdoms (states) remained independent: Chu, Yan and Qi. Chu had recovered significantly enough to mount serious resistance after their disastrous defeats to Qin in 278 BC and losing their centuries-old capital of Ying (Jingzhou). Despite its territorial size, resources and manpower, Chu's fatal flaw was its largely corrupt government that mostly overturned the legalistic-style reforms of Wu Qi 150 years ago, when Wu Qi transformed Chu into the most powerful state with an area of almost half of all the states combined. Ironically, Wu Qi was from the same state (Wei) as Shang Yang, whose legalistic reforms turned Qin into an invincible war machine at this stage.
The King of Qin, Ying Zheng, decided to finally defeat the remnants of the Chu state located in Huaiyang. According to Shiji's chapter on the great generals of the Warring States, Ying Zheng had first requested his great general Wang Jian to lead the invasion, but Wang Jian did not believe the time was right to attack and refused. The first invasion was a disaster when 200,000 Qin troops were defeated by 500,000 Chu troops in the unfamiliar territory of Huaiyang, modern-day northern Jiangsu and Anhui provinces. The Qin general was Li Xing. Wang Jian was recalled and finally accepted to lead the second invasion force, requesting and receiving a force of 600,000 men.
In 224 BC, the famed conqueror of the state of Zhao, Wang Jian, was recalled to lead a second invasion with 600,000 men. Chu's morale greatly increased after their success in defeating a powerful Qin army the previous year. The Chu forces were content to defend and awaited a siege. However, Wang Jian tricked the Chu army by appearing inactive in his fortifications but secretly training his troops to fight in Chu territory. After a year, Chu decided to disband due to inaction. Wang Jian then invaded and overran Huaiyang and the remaining Chu forces. Xiang Yan, the Chu general, managed to resist and inflict bloody losses to Wang Jian until the King Fuchu of Chu was killed by Wang Jian's second in command, Meng Wu, father of Meng Tian. Xiang Yan later committed suicide. Chu was finally conquered in 223 BC. During their peak sizes, both armies of Chu and Qin combined numbered over 1,000,000 troops, more than the massive campaign at Changping between Qin and Zhao 35 years before. The excavated personal letters of two Qin regular soldiers, Hei Fu {黑夫} and Jin {惊}, records a protracted campaign in Huaiyang under general Wang Jian. Both soldiers wrote letters requesting supplies (clothing) and money from home to sustain the long waiting campaign.
Wang Jian is one of the 32 historical figures who appear as special characters in the video game Romance of the Three Kingdoms XI by Koei.