In the battle of Qingxi County (清溪縣; present-day Chun'an County, Zhejiang), the last leg of the campaign against Fang La, Ruan Xiaowu and Li Jun falsely defect to the enemy side to collect intelligence. They set the county on fire when the opportunity arises and let in the Liangshan force. However, Fang's premier Lou Minzhong runs into Ruan Xiaowu and kills him.