Suming used alcohol to disinfect the Wild Man's wound and then applied Yunnan Baiyao and gauze for a simplified dressing, which barely managed to stop the bleeding.
It was less that the bleeding was stopped, and more that the Wild Man's blood was almost drained. With three bullets, three holes, in his shoulder, and behind his thigh and buttocks, he received no timely medical treatment after being shot and had just been lying on the ground. During the fight between Suming and He, the Wild Man even managed to contribute a few moves, ultimately killing Mr. Qian.
By the time everything settled, nearly ten minutes had passed. For an ordinary person, with three large bullet wounds, they would have bled out long ago. It was only because the Wild Man's physical condition was so astonishingly robust that he was still alive.