In ancient books, the monarch of Xia was called Hou, Zhou, Zhou, and some were called emperors. From Kai to, there was a biography of 13 generations 16, which lasted 472 years (say 432 years). For example, from the beginning of the Xia Dynasty, from Yu to Jie, fourteen generations and seventeen kings, it took more than 400 years.
1, Kai -2, Taikang -3, Zhongkang -4, Xiang -5, Shaokang -6, Yu -7, Sophora japonica (powder) -8, Mang (yellow) -9, Xie (stone)-10.