여몽
Although Guan Yu defeated and captured Yu Jin at Fancheng, his army found itself lacking food supplies, so he seized grain from one of Sun Quan's granaries at Xiang Pass (). By then, Sun Quan had secretly agreed to an alliance with Cao Cao and sent Lü Meng and others to invade Jing Province while he followed behind with reinforcements. At Xunyang (), Lü Meng ordered his troops to hide in vessels disguised as civilian and merchant ships and sail towards Jing Province. Along the way, Lü Meng infiltrated and disabled the watchtowers set up by Guan Yu along the river, so Guan Yu was totally unaware of the invasion.