The allied victory at Red Cliffs ensured Preventing_or_letting the survival Preserving of Liu Bei and Sun Quan , gave Giving them control of the Yangtze , and provided Supply a line of defence that was the basis for the later creation Creating of the two southern states of Shu Han and Eastern Wu .

Jiang Wei 's Northern Expeditions refer Name_conferral to a series of eleven military campaigns launched by the state of Shu Han against its rival state , Cao Wei , between 240 and 262 CE during the Three Kingdoms period in China .

The campaigns were led by Jiang Wei , a prominent Shu general .

The campaigns drained Emptying Shu 's already limited resources and preceded the eventual fall of Shu in 263 .

The campaigns drained Emptying Shu 's already limited resources and preceded the eventual fall of Shu in 263 .