In the early years of the Tang Dynasty, it acknowledged allegiance to the Tang and was awarded the surname Li, in the early Song Dynasty, it declared itself a vassal state of the Song and was ...

"Tombs of such scale may have belonged to the leader of a state coexisting with the central kingship of the Xia and Shang dynasties," says Cao. During the Xia and Shang periods, many local vassal ...