The Yellow Emperor is the ancestor of Chinese nation. His original surname was Gongsun, and he was born in Xuanyuan Hill; hence he was called Xuanyuan. He grew up near the Ji River; thus he adopted Ji as his surname. Later, he established a country in Youxiong, so he was also called Youxiong. He became king due to his virtue associated with soil. Soil is yellow, therefore, he was named the Yellow Emperor.