In the 14th-century historical novel `` Romance of the Three Kingdoms '' , the campaign is memorable for at least two famous incidents Catastrophe : one is Guan Yu 's slaying Killing of Hua Xiong ; the other is the three-on-one duel between the three sworn brothers ( Liu Bei , Guan Yu , Zhang Fei ) and Lü Bu .

Her symptoms were posted Sending to the Internet via a Usenet newsgroup by her friend from Peking University , Bei Zhicheng , and were subsequently proven Convincing to be caused Causation by thallium poisoning .

It was fought Hostile_encounter in the winter of AD 208/9 between the allied forces of the southern warlords Sun Quan and Liu Bei and the numerically superior forces of the northern warlord Cao Cao .

Liu Bei and Sun Quan successfully frustrated Preventing_or_letting Cao Cao 's effort to conquer Conquering the land south of the Yangtze River and reunite Cause_to_amalgamate the territory of the Eastern Han dynasty .

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 .