Said the emperor wronged his ancient books.

Sikuquanshu is the largest series in the history of China, which was personally compiled by Emperor Qianlong under the background of "literary inquisition". 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, this book contains 3,503 kinds of ancient books with 79,337 volumes, and is bound into more than 36,000 volumes, which preserves a wealth of literature, but more books were destroyed in the compilation process. The name "Four Treasures of the Study" means that the official collection in the early Tang Dynasty was divided into four subsets of classics and history, which were called "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.

1773) In February, the imperial court set up the "Siku Quanshu Museum", which was responsible for compiling Siku Quanshu. Yan Yong, the sixth son of Qianlong, took charge, appointed Yu Minzhong, a cabinet scholar, as president, six ministers and assistant ministers as vice presidents, and called Ji Yun, a famous scholar, as editor-in-chief, and began to compile this voluminous series. Scholars such as Lu, Sun Shiyi, Dai Zhen, Zhou Yongnian and Shao also participated in the compilation. More than 3,600 scholars have participated in the compilation and officially listed, with 3,800 copywriters.

Sikuquanshu contains the circulating books collected all over the country at that time, the books collected by the Qing court and the rare books compiled by Yongle Dadian. The collection standard should give priority to the methods of sexology, evaluation laws and regulations, and the words of nine schools of thought, regardless of genealogy, letters, fences, longevity words, poems, etc. According to statistics, the number of books alone is 1350 1. At that time, Qianlong also stipulated that anyone who came from the workshop should pay a certain fee; If it is a letter from home, it will be framed and printed; If it is not printed, the manuscript still exists. After screening, these books are collected according to "Manuscripts" and "Bibliography", in which "Bibliography" does not record the whole book, but only extracts some contents, while "Manuscripts" are copied and preserved in a specific format after sorting, collating and textual research, and they have to be collated with the original text repeatedly after copying. Finally, it is 346 1 book.

In order to be beautiful and easy to identify, Sikuquanshu is decorated with color separation, with green longitude, red history, white (or light blue) division and gray-black collection. The determination of four colors depends on four seasons: spring, summer, autumn and winter. Because the catalogue of Sikuquanshu is the outline of the whole book, the yellow color representing the center is adopted.

In the forty-ninth year of Qianlong (1784), four sets of books were completed one after another, with seven volumes, which were stored in Wenyuan Pavilion of the Forbidden City in Beijing, Wenyuan Pavilion of Yuanmingyuan in the suburbs of Beijing, Wenshui Pavilion of Fengtian Palace (now Shenyang) and Jinwen Pavilion of chengde mountain resort, collectively known as "Four Pavilions of the Forbidden City" (or "North Pavilion"). Wenzong Pavilion was built in Jinshan Temple, Zhenjiang, Wenhui Pavilion was built in Daguan Hall, Yangzhou, and Wen Lan Pavilion was built in Shengyin Temple, Gushan, West Lake Palace, Hangzhou, namely "Jiangsu and Zhejiang Sange" (or "Nansangge"), each with one copy. A copy is kept in the Royal College of Art in Shi Jing. Its far Chinese library was completed the earliest, with more refined collation and more neat fonts.

In the fifty-second year of Qianlong (1787), Emperor Qianlong found that some books were slandered in the Sikuquanshu, so he ordered a re-examination of the Sikuquanshu, and finally deleted the records of different histories in 1 1. However, although this 1 1 book was deleted from Sikuquanshu, it still exists in the palace and has not been destroyed. Nine of this 1 1 book are still in circulation.

In the eighth year of Jiaqing (1803), Ji Yun presided over the last part of the official book of Sikuquanshu, which was further improved.