Whether China has a history of disappearance has not been recorded for some time, but it does have this history.

Before the summer, there was a Yu dynasty.

Because there is no text, or we haven't found this text yet.

Legend has it that the Yu Dynasty actually existed for a long time in ancient history. "Han Feizi's Idle Learning" contains: "Yu Xia is over two thousand years old". According to this statement, the Youyu family is by no means a generation of only fifty years old. In addition, according to the historical records such as Guoyu and Zuo Zhuan, the lineage of the Yu family can be listed as follows: Mu, Jing Kang, Chong Qiao Niu, You You, Shun, Yu Si, Ji Bo, Bo, Yu Huang Fu, Hu Jun. You Yu's lineage can be determined, but we have to admit that you Yu is a dynasty.