Researches on Manchu Origins
Researches on Manchu Origins, also known as Manzhou Yuanliu Kao, is an important history book published by the Qing dynasty government in 1777. The Qianlong Emperor sponsored its compilation with the goal of legitimizing Qing rule, as well as identifying the Qing as a successor to the Jin dynasty (1115–1234).
Source: Wikipedia — Researches on Manchu Origins (CC BY-SA 4.0)