The next time the bus moves, everyone loses their balance, but the guy who's fighting doesn't flinch. He's got scars all over his face, including on his nose and brow. The smart wristband that he wears on his wrist shows that he's muscular, so he needs to loosen it. He also has scars on his face. Based on these points and the scars, he deduces that the guy's trained in boxing and that he just got off the bus at the nearest boxing gym. The gang heads to a nearby restaurant for some pork stew and mung bean paste.