The Siku Encyclopedia was known as the encyclopedia of China's feudal society. It was a large-scale encyclopedia of ancient Chinese culture compiled during the Qianlong period of the Qing Dynasty. It collected all the books, documents, and materials in Chinese history, covering politics, philosophy, literature, history, geography, law, medicine, and many other aspects. The compilation of the Siku Quanshu was a grand one. It took many years to collect more than 3800 books, more than 7700 volumes, and a total of about 3.3 billion words. It was one of the important representatives of the cultural heritage of China's feudal society.