In contemporary New York, underground black boxing has spread in the form of "regional leagues" - Chinatown's "Dragon's Den" (a Chinese-style boxing ring that allows the use of short sticks and other traditional equipment, and the audience is mostly Chinese vendors), Brooklyn's "Slaughterhouse" (an abandoned meat processing plant is renovated, the floor is covered with non-slip blood mats, and there are no rules for life and death battles), Manhattan's "Temple of Night" (the underground floor of a skyscraper, the boxing ring is embedded with an LED screen, the audience is financial oligarchs and politicians, and the victory or defeat is tied to the rise and fall of stocks). The three major areas are controlled by the "Irish Brotherhood", "Chinese Youth Gang" and "Blackwater Remnants" respectively. They compete on the surface, but in fact secretly cooperate to squeeze the boxers.
