2. The content of Sikuquanshu is very rich. According to the content classification, it is divided into four parts: classic, history, children and collection. There are categories under subordinates, and there are genera under categories. The book consists of 4 parts, 44 categories and 66 genera.
3. The Confucian Thirteen Classics and related works are collected by the Ministry of Economics, with a total of 10, including Yi, Shu, Poetry, Rites, Spring and Autumn, Filial Piety, Five Classics, Four Books, Music, Primary School, etc. Among them, the ceremony is divided into Zhou Li, Li, San Li, General Li and Miscellaneous Li.
4. The historical books collected by the History Department are 15, including official history, chronicle, miscellaneous history, other history, imperial edicts, biographies, historical notes, records, seasons, geography, official positions, political books, catalogues and historical reviews, among which imperial edicts are divided into imperial edicts.
5. Geographical points 10 genus, namely Gongshu, Tongzhi, Dujun, rivers, frontier defense, mountains and rivers, historical sites, miscellaneous notes, travel notes and external notes; Official positions are divided into two genera, namely, official system and official admonition; Political books are divided into six genera, namely, general system, etiquette, national economy, military and political affairs, law and examination; The catalogue is also divided into classics and exams.
6. hundred schools of thought's works and books are included in the sub-department, including 14 categories, such as Confucianism, military strategists, legalists, farmers, doctors, astronomical algorithms, astrology, art, music records, sage, books, novelists, Buddhists, Taoists, etc.
7. Among them, astronomical algorithms are divided into two genera, namely, pushing steps and calculating books; Arithmetic is divided into seven genera, namely, mathematics, occupation of Hou, taking photos with tombs, divination, writing with life, yin and yang and five elements, and miscellaneous techniques; Art is divided into four genera: calligraphy and painting, piano music, seal cutting and acrobatics. Music records are divided into three genera, namely, utensils, recipes, plants, birds, animals, insects and fish; And miscellaneous studies and miscellaneous tests are divided into miscellaneous categories.
8. Poetry collections and special collections belong to the Library Department, including five categories: Chu Ci, Bieci, Anthology, Poetry Criticism, and Ci Qu, among which Ci Qu also belongs to five categories: Word Segmentation Collection, Ci Selection, Anthology and Rhyme, and North and South Qu.