Before the attack headed by Lu Junyi on Dusong Pass (獨松關; located south of present-day Anji County, Zhejiang) in the campaign against Fang La, a small team is sent to spy on the terrain led by Deng Fei, Ou Peng, Li Zhong and Zhou Tong. While they are studying the landscape, the gate of the pass suddenly opens, out of which charges a group of attackers on horseback. Zhou Tong, taken by surprise, is killed while Deng Fei and the others barely get away. The Liangshan force later overruns Dusong Pass.