Yandi
The Yan Emperor, retreating from a recent invasion from the forces of Chi You, came into territorial conflict with its neighbouring Youxiong tribes, led by the Yellow Emperor. The Yan Emperor was defeated after three successive battles and surrendered to the Yellow Emperor, who assumed the title of overlord () and agreed to merge the two tribes into a new confederation — the Yanhuang tribe. Under the Yellow Emperor's leadership, the newly combined tribes then went to war and defeated Chi You in the Battle of Zhuolu, and established their cultural and political dominance in China proper.