Chūzan Seifu

The Chūzan Seifu (中山世譜, Okinawan:Chūzan shīfu; lit. “genealogies of the generations of Chūzan”) is an official history of the Ryūkyū Kingdom. It exists in two versions, the book of Sai Taku (蔡鐸本), compiled by Sai Taku Shitahaku Uēkata Tenshō (蔡鐸 志多伯親方天将) in 1701 and the book of Sai On (蔡溫本), compiled by his son Sai On Gushichan Uēkata Bunjaku (蔡温 具志頭親方文若) in 1725. The two books are integrally written in traditional Chinese characters.