Shang Yang (/ʃɑːŋ/; Chinese: 商鞅; pinyin: Shāng Yāng), or Wei Yang (Chinese: 衞鞅; pinyin: Wèi Yāng; born with the surname Gongsun in Wey, Zhou Kingdom; c. 390 – 338 BCE), was a statesman and reformer of the State of Qin during the Warring States period of ancient China. His policies laid the foundation that enabled Qin to conquer all of China, uniting the country for the first time and ushering in the Qin dynasty. He and his followers contributed to the Book of Lord Shang strain of what has modernly been termed Chinese Legalism.
Statue of pivotal reformer Shang Yang
With the support of Duke Xiao of Qin, Shang Yang left his lowly position in Wei (to whose ruling family he had been born, but had yet to obtain a high position in) to become the chief adviser in Qin. There his numerous reforms transformed the peripheral Qin state into a militarily powerful and strongly centralized kingdom. Changes to the state's legal system (which were said to have been built upon Li Kui's Canon of Laws) propelled the Qin to prosperity. Enhancing the administration through an emphasis on meritocracy, his policies weakened the power of the feudal lords.
Mark Edward Lewis once identified his reorganization of the military as responsible for the orderly plan of roads and fields throughout north China. This might be far fetched, but Gongsun was as much a military reformer as a legal one. Gongsun saw the construction of Xiangyang.
He is credited by Han Fei with the creation of two theories;
Believing in the rule of law and considering loyalty to the state above that of the family, Gongsun introduced two sets of changes to the State of Qin. The first, in 356 BCE, were:
Gongsun introduced his second set of changes in 350 BCE, which included a new standardized system of land allocation and reforms to taxation.
The vast majority of Gongsun's reforms were taken from policies instituted elsewhere, such as from Wu Qi of the State of Chu; however, Gongsuns's reforms were more thorough and extreme than those of other states. Under Gongsun's tenure, Qin quickly caught up with and surpassed the reforms of other states.
Gongsun introduced land reforms, privatized land, rewarded farmers who exceeded harvest quotas, enslaved farmers who failed to meet quotas, and used enslaved subjects as (state-owned) rewards for those who met government policies.
As manpower was short in Qin relative to the other states at the time, Gongsun enacted policies to increase its manpower. As Qin peasants were recruited into the military, he encouraged active migration of peasants from other states into Qin as a replacement workforce; this policy simultaneously increased the manpower of Qin and weakened the manpower of Qin's rivals. Gongsun made laws forcing citizens to marry at a young age and passed tax laws to encourage raising multiple children. He also enacted policies to free convicts who worked in opening wastelands for agriculture.
Gongsun partly abolished primogeniture (depending on the performance of the son) and created a double tax on households that had more than one son living in the household, to break up large clans into nuclear families.
Gongsun moved the capital to reduce the influence of nobles on the administration.
Deeply despised by the Qin nobility, Gongsun could not survive Duke Xiao of Qin's death. The next ruler, King Huiwen, ordered the nine familial exterminations against Gongsun and his family, on the grounds of fomenting rebellion. Yang had previously humiliated the new duke "by causing him to be punished for an offense as though he were an ordinary citizen." Yang went into hiding and tried to stay at an inn. The innkeeper refused because it was against Yang's laws to admit a guest without proper identification, a law Yang himself had implemented.
Yang was executed by jūliè (車裂, dismemberment by being fastened to five chariots, cattle or horses and being torn to pieces); his whole family was also executed. Despite his death, King Huiwen kept the reforms enacted by Gongsun. A number of alternate versions of Gongsun's death have survived. According to Sima Qian in his Records of the Grand Historian, Gongsun fled to his fiefdom, where he raised a rebel army but was killed in battle. After the battle, King Hui of Qin had Yang's corpse torn apart by chariots as a warning to others.
Following the execution of Gongsun, King Huiwen turned away from the central valley south to conquer Sichuan (Shu and Ba) in what Steven Sage calls a "visionary reorientation of thinking" toward material interests in Qin's bid for universal rule.