臧霸
Before Cao Cao's massive army arrived at the battlefield, Sun Quan's second-in-command, Lü Meng, had already started to strengthen the defences of Ruxu fort, leaving the transportation and retreat route open for Sun. Meanwhile, Cao Cao operated his Hefei fortress as a front-line base, stationing his troops there; in addition, Cao Cao ordered Zang Ba and Sun Guan to mobilize their "Qingzhou Corps" to the battlefield.