At Liangshan
Gongsun Sheng makes numerous contributions to Liangshan in the subsequent battles against the enemies of Liangshan, but he misses his mother and decides to return home to visit her. He also seeks to retire from the Liangshan cause to study Taoism with Taoist Luo, a self-proclaimed immortal. Not long after Gongsun Sheng's departure, the outlaws attack Gaotangzhou (present-day Gaotang County) to rescue Chai Jin, who has been imprisoned by Gaotangzhou's governor Gao Lian. Although Gao Lian's forces are no match for Liangshan, his mastery of sorcery and dark magic is sufficient to hold off the outlaws.
Song Jiang is worried and he sends Dai Zong and Li Kui to find Gongsun Sheng and bring him back to help them counter Gao Lian. After a sheer amount of determination and an attempt on the sage's life by Li Kui, the two of them succeed in persuading Taoist Luo to allow Gongsun Sheng to leave with them. Gongsun Sheng defeats Gao Lian with his superior magic and the outlaws break into Gaotangzhou and rescue Chai Jin. During the battle of Mount Mangdang against Fan Rui and his bandit gang, Gongsun Sheng makes yet another great contribution by breaking Fan's charms with his own more powerful magic. Fan Rui is defeated and he decides to join Liangshan and becomes Gongsun Sheng's apprentice.
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