Four books are the general names of four works: Daxue, The Doctrine of the Mean, The Analects of Confucius and Mencius. It is said that they are called "Four Books" (also called "Four Books") because of the four representatives of early Confucianism, namely Zeng Shen, Zi Si, Confucius and Mencius. The Book of Rites, also known as The Book of Rites for Little Wear or The Book of Little Wear, is one of the Confucian classics and an anthology of various etiquette works before the Qin and Han Dynasties, which is equivalent to The Book of Rites' Yi Zhuan. It is said that it was compiled by Dai Sheng in the Western Han Dynasty. Dai Sheng, Zi Zijun, Doctor of Ritual Studies, life is unknown, was a magistrate of Jiujiang. There are 49 articles in The Book of Rites, such as Quli, Tan Gong, Moon Order, Liu Yun, Xue Ji, University, The Doctrine of the Mean and Realm. The records handed down by Confucius' disciples and their disciples over and over again range from the royal system to the folk customs. Among them, Jing Jie advocates the teaching of six arts, that is, the gentle and sincere teaching of poetry, the far-reaching teaching of calligraphy, the wide and easy teaching of music, the quiet teaching of Yi Xue and the humble and solemn teaching of ethics, which belongs to the teaching of Spring and Autumn Annals. An article by Li Yun puts forward the ideal of "well-off society" and "big world", which has a far-reaching influence on later generations; In the Southern Song Dynasty, Daxue and The Doctrine of the Mean were even co-edited with The Analects of Confucius and Mencius as "Four Books", which became compulsory teaching materials of Mongolian studies alongside the Five Classics.