My Taoist Master Is Afraid That It Is Poisonous

The protagonist travels to a world of immortals and discovers that his master is a Taoist priest with an immortal appearance and unfathomable strength, but his behavioral logic is full of puzzling "poisonous points". In order to survive in the crisis-ridden world of immortality, the protagonist had to "detoxify" his master while practicing hard, only to find that he seemed to have gradually become "toxic"...