2. The Book of Changes has three parts, namely Lianshan, Guizang and Zhouyi. At present, there is only Zhouyi in the world, which is known as the mysterious book of divination.
3. Shangshu is mainly the way to get along with the monarch and the minister; The Book of Songs is a collection of poems from the early Western Zhou Dynasty to the mid-Spring and Autumn Period.
4. Zhou Li recorded the systems of various countries during the Warring States Period.
5. The Rites recorded the etiquette system.
6. The Analects of Confucius is a record of Confucius' words and deeds.
7. The Book of Filial Piety is a book that inherits filial piety.
8. Each book in the Thirteen Classics contains different knowledge, but all of them contain Confucian classics, which are called Confucian classics.