who had prevented flooding in the Yellow River by building draining channels. Yu is therefore credited with founding the Xia Dynasty, as upon his death, he was succeeded by his son Qi, the first ...

ZHENGZHOU, March 13 (Xinhua) -- Ancient city walls unearthed in central China's Henan Province have been identified as dating back to the early Xia Dynasty (2070-1600 B.C.), offering new evidence ...