Destiny Governs Yin: the Man Who Sleeps in a Coffin and Marries Her Husband at the Beginning

I was born with Yin in my body. In order to save my life when I was young, my family asked a master to cast a secret spell on me. On my eighteenth birthday, the secret spell became invalid. Inexplicably, I slept on a dead person's bed, and when I turned around, I saw the dead person waving and smiling at me... From then on, I entered a wonderful world.