What is the purpose of Shang Yang's "Attracting Three Jin Dynasties"? What was the result?

The purpose of Shang Yang's "luring the people of Sanjin" is to change the backward situation of Qin State and make it stronger.

During the Spring and Autumn Period, Qin was relatively weak and was often despised by other vassal states. Shang Yang strengthened the country's strength and dominant position by implementing a series of reform measures, such as "land equalization system", "tithe" and "leftist law". However, these reform measures did not get everyone's support, and some even opposed Shang Yang's reform.

In order to further enhance the strength of Qin, Shang Yang came up with a plan, that is, "tempting Sanjin". He introduced some preferential policies in Qin State to attract talents and people from other vassal States to Qin State. The arrival of these talents brought new ideas and skills to Qin State, and promoted its economic development and technological progress.

Shang Yang's policy of "inviting the three Jin Dynasties" has achieved certain results. The strength of Qin gradually increased and it began to emerge among the vassal States. Under the leadership of Shang Yang, Qin waged a series of wars and won a series of victories. In the end, Qin unified China and became the first unified centralized country in the history of China.

In a word, the purpose of Shang Yang's "attracting Shanxi people" is to promote the strength and development of Qin State. This policy brought many benefits to the State of Qin and had a far-reaching impact on the historical development of China.