 Particularly, it was a leading force that gave rise to the economic prosperity of Song Dynasty in China and has close ties to the prosperity of market economy and private economy during the period.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.The school itself was named after Yongjia, now called Wenzhou, and composed mainly of scholars from Wenzhou (then Yongjia).