1) Chinese mythology 
Danzhu (丹朱) was the son of the legendary Chinese 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 to favorably influence him. Various stories have him either banished, executed, or attempting (and failing) to kill his father. It ...