The next time we see the doctor, he's confident in his own abilities. He's even more confident when he realizes that the only thing that's preventing him from killing himself is the fact that the woman who injured him, Miss Fang, is the only person in the world who can extract his health factors from his body. Miss Fang is also the current manager of the Southern sect, which means that she's the one who invented the tendon-pricking skill, which is the most famous skill in the medical world.
The next time we see the doctor, he's confident in his own abilities. He's even more confident when he realizes that the only thing that's preventing him from killing himself is the fact that the woman who injured him, Miss Fang, is the only person in the world who can extract his health factors from his body. Miss Fang is also the current manager of the Southern sect, which means that she's the one who invented the tendon-pricking skill, which is the most famous skill in the medical world.