A Copper Toad, I Can See the Omen of Death

I am Xia Zhen, a senior high school graduate. The reason for coming to the haunted house is very simple, lack of money. However, the haunted house experience changed the course of my life. Everyone has a bit spirit in their body. I am very lucky to have awakened my bit spirit, but I am unlucky to have awakened my bit spirit. It will replace me, like a person directly snatching your body and depriving you of your soul. A copper toad that can predict the cause of death, a wooden sign left to me by my father. Who I am? A general on the battlefield? A well-read old kid? I seem to have been replaced. There seem to be many people in this body. Who am I in this body?