Unbelievable! The Spirit Medium Clans Are All Fighting Over Me

I was born a pure yin woman, and I possess a rare immortal physique. After visiting the Shrine of Ten Thousand Immortals, I caught the eye of immortals from all sorts of paths, and every one of them wanted to take me as a disciple. My unusual constitution lets me burn without dying and sleep within ice, but having too many masters caused my body to suffer frequent backlash. Ming Xiao made the Banner of Ten Thousand Immortals to help me, and I assumed he was some kind of immortal too... Then he suddenly told me that many immortals could inhabit my body, but this flesh belonged to him alone. I asked who he was. He answered: the King of the Underworld!