This person was eccentric and arrogant. His alchemy skills had reached perfection, but he was still best at making poison. The Gu poison in Li Ling's body was created by him.
"Uncle Wan, I'm here." Kong Rui knocked on the door. The Poison Master opened the door and said, "You don't come here unless you have a request."
"No!" Kong Rui stuck out her tongue guiltily.
The Poison Master tossed her a small pill bottle, as if it were nothing to him, but it had taken him forty-nine days to make.
"I knew you knew me best, Uncle Wan!"
