Tang was one of the four most wise emperors in ancient China.

Yao, the legendary holy king in ancient China, is called in Shangshu and Shiji. Later generations also said that he was from Shang Tao, surnamed Qi Yi, so he was also called Tang Yao.

Shun, known as Yao, is the legendary holy king. According to Historical Records, Shun was named Zhong Hua, and Huangfu Mi in Jin Dynasty said Shun was a gentleman. Shun is also known as Yu Shun,

Yu, usually called Dayu, is an ancient holy king who is as famous as Yao and Shun in legend, and is said to be the founding monarch of Xia Dynasty. "Historical Records" said that he was born by Wen, and "Emperor Century" said that the word was secret. "Yu is, Yu is the surname", but it is generally called, which is the habit of taking the country as the surname in the pre-Qin period.

Tang, the ancestor of Shang Dynasty, was also called Wu Tang,,, and Oracle Bone Inscriptions called Tang and Taiyi, and was called Gaozu B in ancient times.