Sikuquanshu is the largest collection in the history of China (followed by Yongle Grand Ceremony in Ming Dynasty). The compilation began in the thirty-eighth year of Qing Qianlong (1773) and took nine years to complete. * * * 3503 volumes, 79337 volumes, 36304 volumes, nearly 2.3 million pages, about 800 million words. The whole set of books contains most important ancient books (some of which are forbidden) from pre-Qin to early Qing Dynasty, covering almost all academic fields in ancient China. The whole set of books is divided into four parts: Classics, History, Zi and Ji, with 44 categories, including The Analects of Confucius, Daxue, Mencius, The Doctrine of the Mean, Zhouyi, Zhou Li, The Book of Rites, The Book of Songs, The Book of Filial Piety, Shangshu, Chunqiu and Erya. There are also some works by Japanese, Korean, Vietnamese, Indian and European missionaries in China, which provide a relatively complete literature for future generations to study China's ancient culture.