There are forty-four lines in Le Yi Lun, and Chu Suiliang's Bibliography of Jin Xizhi ranks first. Liang Tao Hongjing said: "The right army has several famous monuments: Huang Tingjing, Cao E Monument and Le Yilun." The original is long gone. During the war, I threw it into the kitchen fire for the old woman in Xianyang. It is said that all the right army books collected by Emperor Taizong of Tang Dynasty are authentic, but this post only contains stone carvings. There are many kinds of prints in the world, among which the Secret Pavilion Edition and Yuezhou Stone Chamber Edition are the best.