War Is Peace was also a Pugilist and the martial arts that he practiced was the Hong Quan martial arts. Hong Quan was a martial art that was built on a sturdy foundation and was widely practiced by many.
As this boxing technique was easy to pick up but hard to excel in, the number of true practitioners of this martial art paled in comparison with the number of common street thugs that used it. However, as time passed, the martial art itself did not decline. The fighters from the underworld passed down this form of fighting on to their future generations and were considered a form of contribution that the underworld did for the martial arts world.
However, the quintessence of the martial art itself was not picked up by the fighters from the underworld. Even if the martial art was passed down to future generations, it was merely the basic form of it and not its complete form.