Ji Xiaolan, aka? What are the four categories of ancient books he sorted out in Sikuquanshu?

Ji Yun, Jing, Shi and Zi, consists of four parts, which began in 1772 and was compiled in ten years. The series is divided into four parts: classics, history, books and collections, hence the name Sku. According to Wen Jin Ge Ji, the book contains 3503 kinds of ancient books, 79337 volumes, and more than 36000 volumes are bound, which preserves a wealth of literature. The name "Four Treasures of the Study" originated in the early Tang Dynasty. In the early Tang Dynasty, the official books were divided into four stacks, namely "Four Treasures of the Study" or "Four Treasures of the Study". The quartering of the subset of classics and history is the main method of ancient book classification, which basically covers all ancient books, so it is called "the whole book". In the early years of Qianlong in the Qing Dynasty, Zhou Yongnian, a scholar, put forward the theory of Confucianism and Tibet, and advocated that Confucian works should be integrated for people to borrow.