Yandi
The Yellow Emperor and the Yan Emperor were both leaders of a tribe or a combination of two tribes near the Yellow River. The Yan Emperor hailed from a different area around the Jiang River, which a geographical work called the "Shuijingzhu" identified as a stream near Qishan in what was the Zhou homeland before they defeated the Shang. Both emperors lived in a time of warfare. The Yan Emperor proving unable to control the disorder within his realm, the Yellow Emperor took up arms to establish his domination over various warring factions.