Aftermath
Which land did Liu Bei occupy that Cao Cao had recently lost?
Battle of Red Cliffs
By the end of 209, the post Cao Cao had established at Jiangling fell to Zhou Yu. The borders of the land under Cao Cao's control contracted about , to the area around Xiangyang . Liu Bei, on the other hand, had gained territory by taking over the four commanderies (Wuling, Changsha, Lingling and Guiyang) south of the Yangtze River. Sun Quan's troops had suffered far greater casualties than Liu Bei's in the extended conflict against Cao Ren following the Battle of Red Cliffs , and the death of Zhou Yu in 210 resulted in a drastic weakening of Sun Quan's strength in Jing Province . Liu Bei also occupied Jing Province that Cao Cao had recently lost — a strategic and naturally fortified area on the Yangtze River that Sun Quan claimed for himself. The control of Jing Province provided Liu Bei with virtually unlimited access to the passage into Yi Province (covering present-day Sichuan and Chongqing) and important waterways into Wu (southeastern China), as well as dominion of the southern Yangtze River. Never again would Cao Cao command so large a fleet as he had at Jiangling, nor would a similar opportunity to destroy his southern rivals present itself again . The Battle of Red Cliffs and the capture of Jing Province by Liu Bei confirmed the separation of southern China from the northern heartland of the Yellow River valley, and also foreshadowed a north-south axis of hostility which would resonate for centuries .