Around 214, Cao Cao retreated from Ruxu, he appointed Zhu Guang () as the Administrator () of Lujiang Commandery (廬江郡; around present-day Lujiang County, Anhui) and ordered him to station at Wan County (皖縣; present-day Qianshan County, Anhui). Zhu Guang developed the area for agricultural use, while bribing bandits from Poyang County to cause trouble in Sun Quan's territories. Lü Meng warned Sun Quan: "The lands in Wan County are very fertile so the enemy's numbers will rise after they gain a bountiful harvest. Within a few years time, Cao Cao's military prowess would have increased significantly, so we should eliminate them soon." Sun Quan heeded Lü Meng's advice and personally led a campaign to attack Lujiang Commandery. Before the battle, Sun Quan summoned all his officers and asked them for their opinions.