What is the relationship between Zhou Yixian, the patriarch of the Ghost King?

Hello, the ghost king once met Zhou Yixian when he was young. Zhou Yixian told his fortune that he was a wife killer. Finally, the real wife died. As you can see here, Zhou Yixian and the ghost king met in the original text. Zhou Yixian may be a descendant of Qingyun Gate who disappeared earlier. In the original text, Qingyun Gate introduced Zhonghe Xiaohuan and asked Zhou Yixian why he didn't recognize his relatives.