Sheath

Brothers, Please Solve My Book Shortage.

I'm looking for a fantasy novel. The protagonist's name is Tang Yan, and he has a wife named Niya. He is a prince of the Demon Spirit Clan. There are ten royal families in the book, including the Samsara Clan, the Yin-Yang Clan, the Demon Spirit Clan, the Bone Clan, etc. There are also demon clans such as the Succubus Clan, the Black Demon Clan, etc. Please help brothers!