Page "Xia Dynasty" Paragraph 1

According to the traditional chronology based upon calculations by Liu Xin, the Xia ruled between 2205 and 1766 BC ; according to the chronology based upon the Bamboo Annals, it ruled between 1989 and 1558 BC.

The Xia Shang Zhou Chronology Project concluded that the Xia existed between 2070 and 1600 BC.

The tradition of tracing Chinese political history from heroic early emperors to the Xia to succeeding dynasties comes from the idea of the Mandate of Heaven, in which only one legitimate dynasty can exist at any given time, and was promoted by the Confucian school in the Eastern Zhou period, later becoming the basic position of imperial historiography and ideology.

Although the Xia is an important element in early Chinese history, reliable information on the history of China before 13th century BC can only come from archaeological evidence since China's first established written system on a durable medium, the oracle bone script, did not exist until then.

Thus the concrete existence of the Xia is yet to be proven, despite efforts by Chinese archaeologists to link Xia with Bronze Age Erlitou archaeological sites.