My surname is Manchu. What was my original Manchu surname? Please tell someone who knows!

Li surname may have two origins: 1. There is a river called Riga River (now called Lijia River) in Yongling Town, Xinbin Manchu Autonomous County, Liaoning Province, which is the settlement of Jianzhou Nuzhen in Ming Dynasty. Riga Manchu means (sticky) that the Jurchen at that time took "Li" as the surname, which has been passed down to this day. 2. According to relevant historical records, the surname Li in the blue flag was originally Sasaki, and Shusai, the ancestor of Sasaki, returned to Nurhachi in the eighth year of Wanli in the Ming Dynasty. Li Fuha, the great-grandson of Shusai, included Shusai's biography in Saskatchewan genealogy, and later reprinted it in memory of Li Fuha.