Sikuquanshu is the largest series in the history of China personally organized by Emperor Qianlong. It started at 1772 and was compiled after 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.

Shortcomings of Sikuquanshu

First, attach importance to Confucian works and put them in a prominent position. Put Confucian classics at the head of the four books, and general Confucian works at the head of the sub-department. The second is to despise scientific and technological works, thinking that modern western science and technology is "the best of heresy" and can "take its skills and ban its skills". Except for a few scientific and technological works collected by farmers, doctors and astronomical algorithms, general scientific and technological works are not included. Third, we don't accept drama works and chapter novels. Fourth, the words in the book may be abridged or tampered with.