程普
Around the time, Liu Bei had recently been defeated by Cao Cao at the Battle of Changban, and he planned to lead his followers south across the Yangtze River. Liu Bei met Lu Su at Dangyang, where they discussed the formation of an alliance between Liu Bei and Sun Quan. Liu Bei then moved to Xiakou (夏口; present-day Hankou, Hubei) and garrisoned there. At the same time, he also sent his adviser Zhuge Liang to accompany Lu Su to meet Sun Quan and discuss a Sun–Liu alliance. Sun Quan ordered Zhou Yu and Cheng Pu to lead his forces to join Liu Bei in resisting Cao Cao, and they rendezvoused at Red Cliffs (). A plague had broken out in Cao Cao's army, so Cao Cao lost to the allied forces in an early skirmish between both sides. Cao Cao then moved his camp to the northern bank of the Yangtze River while the allies remained at the south.