This Immortal Is Hysterical

The protagonist, Chen Mo, was a top criminal psychology expert and negotiation expert before traveling through time. He was shocked to find that the top experts in the world of cultivation all had serious psychological problems (paranoid personality, antisocial personality, post-traumatic stress disorder, etc.), And their "inner demons" and "bottlenecks in heaven" were essentially mental illnesses. Chen Mo did not have heaven-defying spiritual roots, but relied on his knowledge of modern psychology to become the only "psychiatrist" in the world of cultivation. He specialized in treating all kinds of dissatisfaction, obsession and bottlenecks, and finally "cured" the entire twisted cultivation civilization.