The Evil Ghost Revives: the Tortured Ghost Begs Me to Control Him

My name is Xu Nianyou. In this era when evil ghosts are recovering, I met an abused ghost in the hospital. He didn't speak, but I could tell from his eyes that he wanted me to control him and gain his abilities. Later when I thought this was the most rubbish ability. It dawned on me that I had painlessness.