Emperor Ku - Bamboo Annals

In the Bamboo Annals, one of the earliest sources, it is mentioned that when Emperor Zhuanxu died, a descendant of Shennong named Shuqe raised a disturbance, but was destroyed by the prince of Sin, who was Ku (Gaoxin), a descendant of Huangdi, who then ascended to the throne. It also states that Ku "was born with double rows of teeth, and had the wisdom of a sage", and that he "made blind men beat drums, and strike bells and sounding stones, at which phoenixes flapped their wings and gambolled". The Annals further record that in the 16th year of his reign, he sent his general Chung to defeat the state of Yukwai. In the 45th year, Ku designated the prince of Tang (his son Yao) as his successor, however upon his death in the 63rd year, his elder son Zhi then took the throne instead, ruling 9 years before being deposed and replaced by Yao.