The Mythical Period

Early prehistoric China is called the "Mythical Period." It encompassed the legends of Pangu, and the rule of the Three Sovereigns, and the Five Emperors. The period ended when the last Emperor, Shun, left his throne to Yu the Great, and the Xia Dynasty began. 

The final part of the Mythical Period was under the rule of the legendary Xia Dynasty, which may have been mythological. After the final ruler became corrupt, he was overthrown by Cheng Tang, who founded the Shang Dynasty.