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".

If you are asking about the Four Books and the Five Classics, it is the general name of the Four Books and the Five Classics, and it is a classic work of China Confucianism. The four books refer to The Analects of Confucius, Mencius, University and The Doctrine of the Mean. The Five Classics refer to The Book of Songs, Shangshu, Book of Rites, Zhouyi and Chunqiu, which are referred to as "Poems, Books, Rites, Changes and Chunqiu" for short.