This is not a traditional "The God of War Returns" or "The Miracle Doctor Marries a Son-in-Law" story. The core uniqueness is that the "advanced skills" learned by the protagonist Zhang Jie are not purely martial arts or medical skills, but a "meta-skill" that is close to philosophy and has insight into the laws of all things (including human nature, society, and nature). He is powerful, but this power is out of place in the complex rules and sophistication of modern cities, and may even put him into deeper trouble at first. His life of repaying his kindness and becoming a son-in-law was a long, painful and profound "social practice" in which he applied this "meta-skill" to the real world.
