关胜
Informed of Guan Sheng's defection, Cai Jing orders Shan Tinggui and Wei Dingguo, two military instructors based in Lingzhou (凌州; in present-day Dezhou, Shandong), to mount another attack on Liangshan. Guan Sheng volunteers to take the fight to Lingzhou, with Xuan Zan and Hao Siwen as his assistants. In their first clash, Shan Tinggui and Wei Dingguo lure Hao and Xuan respectively into their battle ranks where they are engulfed by soldiers and captured. When Hao and Xuan are on the way being sent to Dongjing for punishment, the bandits of Mount Deadwood under Bao Xu, who is poised to join Liangshan invited by Li Kui, intercept the convoy and rescue them. Led by Li Kui, Hao Siwen, Xuan Zan, Bao Xu and Jiao Ting attack a gate of Lingzhou, causing its fall and the rout of Wei Dingguo's force. Like Shan Tinggui, who is earlier won over by Guan Sheng, Wei gives in to Liangshan when he finds himself cornered.