Lao Yangpi and his younger brother are both members of a group of bandits in the Northeast called the "Taozi". His younger brother, Yang Erdan, is the leader of this bandit organization. Later, Yang Erdan took Huang Taixian's copper box to the base of the Japanese Water Supply Corps in Baiyan Cave and never came back. Lao Yangpi started herding sheep on a nearby pasture.