World view: An extremely chaotic fictional sin city "Gotham-style" port city. There are no laws here, just gang rules. Money, drugs, and arms are the only currencies in circulation.
Protagonist character: Qin Lie. He looks like a handsome twenty-year-old, but in fact he has a genetic "antisocial personality" and a "combat genius." He has no fear, no pity, no sense of morality. His happiness is based on domination and destruction.
Core conflict: Qin Lie parachuted into the lowest slums, not for revenge or justice, but purely for "fun" and "conquest". He wants to step on the corpses all over the city and fight his way from street gangsters to the throne of the underground world.
Creative highlights: Abandoning traditional undercover or whitewashing routines, purely showing the ultimate aesthetics of violence and high-intelligence crimes. The protagonist is the absolute dominator, and all the villains are just lambs to be slaughtered in front of him.