Wei Yang's historical contribution is that Shang Yang made A Qin rich and strong through political reform, which is called Shang Yang's political reform in history.

During the Warring States Period, after Qin Xiaogong Ku Quliang of Qin acceded to the throne, he was determined to reform, ordered the recruitment of talented people, and Shang Yang entered Qin from Wei. He put forward a set of reform and innovation development strategies, such as abandoning ore fields, emphasizing agriculture and mulberry, rewarding meritorious military service, implementing unified measures, and establishing county system, which won the trust of Qin Xiaogong and made Shang Yang the eldest son of Zuo Shu.

In 356 BC and 350 BC, two reforms were carried out with the main content of "abandoning ore fields to open buildings, implementing the county system, rewarding farmers and fighting, and implementing the method of sitting together".

The influence of Shang Yang's political reform;

Shang Yang's political reform was a successful political reform in ancient China, which made A Qin a powerful country, laid the foundation for the unification of the six countries in the future, and determined the idea of rule of law.

Shang Yang absorbed the experience of Li Kui, Wuqi and other Wei Chu legalists, combined with the specific situation of Qin State, further developed the legalist policy, and later came from behind and made great achievements.

Shang Yang further broke the well field system, expanded the mu system, emphasized agriculture and restrained commerce, rewarded the production of male plowing and female weaving, encouraged reclamation, and promoted the development of small-scale peasant economy in Qin State.