When Song Jiang is following the outlaws of Liangshan Marsh back to their stronghold after they and a number of heroes of the Jieyang region saved him in Jiangzhou (江州; present-day Jiujiang, Jiangxi), he comes by Mount Yellow Gate with the group. They are blocked by the bandits led by Ou Peng, who demands to know whether Song is among them. When he steps out to show himself, the four come forward to pay him homage. Learning that the group is going to Liangshan, Ou and his band want in and Song gladly agrees.