The emperors of the ancient times were not exclusively one person, but were multi-generational chiefs of the tribes ruled by this emperor's name, and once the emperor's name was established, it lasted for many generations of chiefs, so they ruled over a rather large span of time. For example, the Shennong Clan, and before that the Fuxi Clan and the Nuwa Clan, etc. Some names gradually became official positions, such as the Zhu Rong Clan and the ****ong Clan. This explains the relationship between ****Gong, who appeared both in the same period as his ancestor Zhu Rong, and under Yao, who came many generations later, as well as the owner's Yu and Shun, who were of much different generations. This relationship ended at Xia Qi, and although there is no written evidence for the existence of the Xia dynasty, it did usher in a new era