While Lu Su had been chief commander for Sun Quan in Jing Province, their policy was to maintain the alliance with Liu Bei while Cao Cao was still a threat. This changed when Sun Quan appointed Lü Meng when Lu Su died in 217. In 219, Guan Yu sailed from Jiangling up the Han River towards the city of Fan (near Xianyang), but was unable to capture it. In the autumn of 219, Lü Meng launched a surprise attack by sailing up the Yangtze towards Jiangling, resulting in its capture. Guan Yu was unable to hold his position as most of his army surrendered. He was captured and executed on Sun Quan's order. Cao Cao regained the Han valley, while Sun Quan captured all the territory east of the Yangtze Gorges.