Daughter-In-Law Poison Doctor: the Loser Counterattacks and Destroys the Whole Capital

From a good-for-nothing that everyone can bully, he transforms into a poisonous doctor that everyone respects. He tears up all those who have bullied him, uses medical skills to save people, uses poisonous skills to punish evil, and slaps people in the face overnight. His strength crushes all dissatisfaction, and takes back everything that belongs to him step by step. In the end, he dominates the country and lives a life that no one can match.