When he stepped into the city from the wilderness, what he brought with him was not luggage, but a survival instinct engraved in his bones and blood and a beast-like sense of hunting.
Everyone thought that this "savage" like him would be torn apart by the rules of steel and concrete. Until she uprooted her first opponent in the most primitive way in front of the entire upper class society. They discovered to their horror that it was never civilization, but power, that really set the rules.
No system, no cultivation, no supernatural powers.
There is only the purest game here: on the one hand are the precision-operated urban laws, on the other hand are the fatal instincts tempered by the wild. This collision was a dimensionality reduction blow from the beginning.