四庫全書
In "Siku Quanshu", Sima Zhen (679–732) provides commentary on the prologue chapter to Sima Qian's "Shiji", "Supplemental to the Historic Record: History of the Three August Ones", wherein it is found that the Three August Ones are Nüwa, Fuxi, and Shennong; Fuxi and Nüwa have the same last name, Feng (; Hmong: Faj).