Li Yun Li Yun mainly records the evolution of ancient social and political customs, social and historical evolution, origin, content and its relationship with social life, and expresses the Confucian view of social history and the way of etiquette. Ancient times refers to the highest political ideal. The Book of Rites, one of the Confucian classics, is a compilation of various etiquette works before Qin and Han Dynasties by Dai Sheng in the Western Han Dynasty, with a total of 49 articles. Li Yun is a book written by Confucian scholars at the end of the Warring States Period or the Qin and Han Dynasties, and its title is The Book of Rites.