Subjects
- Classics 經 comprises the Thirteen Classics of Confucianism 十三經, commentaries on the classics, and philology.
- History 史 contains historical works and documents, as well as works in geography, epigraphy 金石學, historiography and bibliography.
- Masters 子 includes a wide range of subject areas, such as masters and hundred schools of thought 諸子百家 of the late Warring States (475-221 BC), agriculture, medicine, fine arts, astronomy, math, encyclopedias 類書, Buddhist and Daoist works, etc.
- Literature 集 primarily consists of literary works and anthologies, collected works of individual authors, and poems.