Meridian: refers to Confucianism. At first, there were five classics, namely, poetry, calligraphy, Yi, Li, Spring and Autumn Period, which were called "Five Classics". From the Tang Dynasty to the Song Dynasty, thirteen classics such as Yi, Shu, Shi, Zhou Li, Yi Li, Li Ji, Zuo Zhuan, Gong Yang Zhuan, Gu Liang Zhuan, The Analects of Confucius, Xiao Jing, Er Ya and Mencius were formed.
History Department: refers to a history book that records the rise and fall of history, the suppression of chaos, various people and the evolution of the system. As early as 4,000 years ago, China had a historical record. All kinds of historical works fall into this category. Sima Qian's Historical Records is the beginning of the official history of China. Since then, almost every dynasty has a history and 24 histories. In addition, there are ancient history, unofficial history, codes, local chronicles, official positions, political books, seasons and so on. All recordable books are included in the history department.
Subdivision: refers to books that record the contention of a hundred schools of thought and their theories. During the Spring and Autumn Period and the Warring States Period, scholars came forth in large numbers and a hundred schools of thought contended. Philosophy, honorary science, law, medicine, mathematics, military science, astronomy and agriculture are all very developed. Each family writes a book, and later generations are called sub-books because they are second only to classics. Taoism, Neo-Confucianism in Song and Ming Dynasties and Textual Research in Qing Dynasty are also in the Ministry.
Anthology: The collection of essays, parallel prose, poems, words, songs and other literary criticism works by writers of past dynasties all belong to this category. What belongs to one person is called anthology, several people's works are called collections, and poetry collections are called poetry collections.