Gongsun Sheng
Song Jiang launches a military attack on Gaotangzhou to save Chai Jin. After Gongsun Sheng defeats Gao Lian in a battle of magic, the outlaws flock into the prison to search for Chai Jin. But none could locate him. A jailer tells them he has hidden Chai in a dry well to keep him from being harmed by Gao. Li Kui volunteers to go down the deep shaft to fetch Chai up. As Chai has been tormented and deprived of nourishment for days, he is close to death when hauled out of the well. Fortunately, he survives. Chai Jin joins Liangshan, knowing that the "danshu tiequan" is a fraud.