"Subsets of Classics and History" are four categories of ancient books in China. Confucian Thirteen Classics and related works are collected by the Ministry of Classics, including the Book of Changes, Books, Poems, Rites, Spring and Autumn Period, Filial Piety, Five Classics, Four Books, Music, Primary School, etc. 10, among which Rites are divided into six categories: Zhou Rites, Rites, Rites, Three Rites, General Rites and Miscellaneous Rites.
The sub-department contains hundreds of works and books, including Confucianism, military strategists, legalists, farmers, doctors, astronomical algorithms, astrology, art, music records, miscellaneous books, novellas, Buddhists, Taoists, etc. 14 category.
The history department includes history books, and the collection department includes poems and picture books. So it's not a repetition.