What is the identity of the black Haihe demon dragon? Who killed his father?

The identity of Black Hailong is the son of Jinghe Dragon King and the nephew of Aoshun, the dragon king of the West Sea. His father was beheaded by the Jade Emperor for disobedience.

The demon dragon of the Black Haihe River is called Keelung. His father is King Jinghe, and his mother is the sister of Aorun, King of the West Sea. Among the nine brothers, Xiao Jilong is the youngest and the most loved by his parents. However, his father and Yuan Shoucheng were beheaded for counting points in the gambling game "Rain", and the wife of Jinghe Dragon King had nowhere to live, so she had to take Sister Mian, a child, to the West Sea Dragon King to settle down temporarily. like this

Xiao Jilong grew up in his uncle's parents. Because King Jinghe lost his temper with the fortune teller Yuan Shoucheng, he was beheaded by the Jade Emperor for disobeying because he didn't rain at the time and in the amount stipulated by the Jade Emperor's imperial edict.