In the mid-Kangxi period, there was a scene of peace and prosperity in the Qing Dynasty. By the Yongzheng and Qianlong years, the national strength of the Qing Dynasty reached its peak. Therefore, the academic circle called the Kangxi, Yongzheng and Qianlong periods as the "Kangqian盛世 Prosperity". The Siku Quanshu (hereinafter referred to as the "Siku"), compiled during the Qianlong period, is the largest series of ancient China. It is the product of the economic wealth, social stability, national strength and cultural flourishing during the Kangqian Prosperity, and it is an extremely important cultural achievement of this period. It is also deeply marked by the cultural despotism of the period.