Guan Zhong advocated enriching Qiang Bing, attaching importance to economy and agriculture, opposing empty talk and establishing vocational skills education. Guan Zhong's legal thought advocates the combination of "Heaven" and law, the combination of reforming old rites and creating new laws, and the combination of law and ceremony, so as to promote the rich Qiang Bing by legal means.

Guan Zhong (723-645 BC) was born in Yingshang (now Yingshang County, Anhui Province). China was a famous economist, philosopher, politician and strategist in ancient times. The representative figure of Legalism in the Spring and Autumn Period, the descendant of Zhou Muwang.

Guan Zhong rectified the administrative system and "combined with other countries but ignored them". The so-called "Three Kingdoms" is to divide the whole country into 2 1 townships, 15 townships for scholars, 3 townships for industry, 3 townships for business, and set up three officials to manage. The so-called "five flags" is to divide the common field into five genera and set up five doctors and five senses in charge. It belongs to four levels: county, township, pawn and city, and is managed by county, township, pawn and company officials respectively.

Guan zhong's diplomatic proposition, under the banner of "respecting the king and rejecting foreign countries", takes the emperor as a vassal to cut disrespect. In order to make Qi Huangong his vassal, Guan Zhong made a lot of diplomatic efforts to help Qi Huangong. In the 23rd year of Qi Huangong (663 BC), Shanrong attacked Yan, and Yan asked Qi for help, and Qi saved Yan.