[3][4][5] The Yongjia School of Thought emerged in response to the social and political crises in southern Song, specifically the attempt on the part of Zhu Xi and Lu Jiuyuan to establish their authority over Confucian Classics and was aggravated by the military threat from the north and the corruption in the government.
It began with the need to contend with the changing intellectual climate and was initiated by the Yongjia scholars such as Zhou Xingji and Xue Jixuan.
[6] It was further promoted by the materialist thinkers Ye Shi (1150–1223) and Chen Liang [zh] (1143–1194), who elevated the social status of those people who engaged in commercial and merchant activities.
[7] Ye Shi is noted for amending the mainstream Confucian ideology by focusing more on business, rejecting the ideas such as the giving of high priority to justice and low priority to profit.
[8] The school finally evolved into a unique school of thought in Chinese history, advocating for the importance of commerce, privatization, market economy, free trade, currency market while China by tradition values agriculture, concepts, and thoughts that were distinctly different.