Danzhu was the son of Emperor Yao (Tang Yao). His mother was a concubine San Yi.

He was described as vicious and a playboy, and his father Yao is said to have invented the game of Weiqi

Go (board game)

Go , is an ancient board game for two players that originated in China more than 2,000 years ago...

to favorably influence him. Various stories have him either banished, executed, or attempting (and failing) to kill his father.