The content of "Sikuquanshu" is very rich. According to the content classification, it includes 4 parts, 44 categories and 66 genera. It is divided into four parts: Jing, Shi, Zi and Ji, hence the name Siku. The Book of Classics includes 10 major categories: Yi, Shu, Poetry, Rites, Spring and Autumn, Filial Classics, General Meanings of the Five Classics, Four Books, Music, and Primary Schools. Among them, Rites are divided into Zhou Rites, Ritual, etc. There are 6 categories: Rites, Book of Rites, General Meanings of Three Rites, Tongli, and Miscellaneous Rites. The primary school category is divided into 3 categories: exegesis, calligraphy, and rhyme books. The history category includes official history, chronicle, chronicle, and miscellaneous history. There are 15 major categories, including history, edicts and memorials, biographies, historical notes, records, seasonal affairs, geography, officials, political documents, catalogues, and historical reviews, among which edicts The memorial category is further divided into two categories: edicts and memorials; the biography category is further divided into five categories: saints, celebrities, general records, miscellaneous records, and separate records; the geography category is further divided into palaces, general records, cities and counties, rivers and canals, border defenses, There are 10 genera of mountains and rivers, historical sites, miscellaneous notes, travel notes, and foreign notes. The official category is divided into 2 genera: official system and official admonishment. The political book category is divided into 6 genera: general system, ceremony, state planning, military affairs, laws, and examinations. The directory category is also divided into 10 categories. It is divided into 2 categories: classics and epigraphy; sub-categories include Confucianism, military strategist, legalism, farming, medical, astronomical algorithm, arithmetic, art, genealogy, miscellaneous books, novelists, etc. , Buddhism, Taoism, etc. There are 14 major categories. Among them, the astronomical algorithm category is divided into two categories: pushing steps and arithmetic. The arithmetic category is further divided into mathematics, fortune telling, fortune telling, fortune telling, and yin and yang five elements. , 7 genera of miscellaneous technology, the art category is divided into 4 genera of calligraphy and painting, musical notation, seal cutting, and acrobatics, the genealogy of genealogy is divided into 3 genera of utensils, recipes, plants, birds, animals, insects, and fish, and the miscellaneous family category is divided into miscellaneous studies, miscellaneous examinations, and miscellaneous theories, There are 6 categories of Miscellaneous Works, Miscellaneous Anthologies and Miscellaneous Collections. The novelist category is further divided into 3 categories: Miscellaneous Things, Strange Stories and Miscellaneous Words. The Collection Division includes 5 major categories: Songs of Chu, Part Collection, General Collection, Poetry and Prose Review, and Ci and Music. Among them, Ci and Music The category is divided into five categories: word collection, word selection, word words, word spectrum and word rhyme, and northern and southern songs. In addition to chapter novels and drama works, the above categories basically include all kinds of books circulating in society. As far as authors are concerned, there are works by various figures including women, monks, Taoists, eunuchs, soldiers, emperors, foreigners, etc. In November of the thirty-seventh year of Qianlong's reign (1772), Anhui academician Zhu Jun raised the issue of compilation of "Yongle Dadian" and was approved by Emperor Qianlong. He then issued an edict to combine the compilation of the lost books with "all the official documents collected by the provinces and Wuying Palace". "Engraved Books", compiled together, called "Sikuquanshu". In December of the forty-sixth year of Qianlong's reign (1781), the first "Sikuquanshu" was finally copied and decorated for presentation. Then it took nearly three years to copy the second, third and fourth parts and store them separately in Wenyuan Pavilion, Wensu Pavilion, Wenyuan Pavilion and Wenjin Pavilion. These are the so-called "Northern Four Pavilions". From July of the forty-seventh year of Qianlong (1782) to the fifty-second year of Qianlong (1787), three more volumes were copied and stored separately in Jiangnan Wenzong Pavilion, Wenhui Pavilion and Wenlan Pavilion. This is the so-called "Southern Three Pavilions" . Each "Sikuquanshu" is bound into 36,300 volumes and 6,752 letters.
The books in Qige are all stamped with seals. For example, the volume in the Wenyuan Pavilion has a Zhu Wen square seal of "Wenyuan Pavilion Treasure" at the beginning, and a Zhu Wen Fang Seal of "Wenyuan Pavilion Treasure" at the end of the volume.