Gu consults with Sun Xin, who enlists the help of the outlaws Zou Yuan and Zou Run. Gu is worried that her brother-in-law Sun Li would stand in their way. So she pretends to be ill and gets Sun Li to visit her. When Sun appears, the couple threaten him to decide either to join them or fight them. Sun reluctantly signs on to their plan. With the help of Yue He, the group break into the prison and free the Xie brothers. They then flee to join the outlaws of Liangshan Marsh.