Cao Cao led a great army to occupy Jingzhou. Although it was sublime and sweeping, he was very proud and not vigilant. He thought that Sun Liu's allied forces were vulnerable and could be broken in one fell swoop. Therefore, Cao Cao underestimated Sun Liu's alliance, while Sun Liu's combined army had less than 50,000 amphibious soldiers. Although their strength was weak, the upper and lower soldiers and civilians were United as one, so their morale was greatly increased, and with the help of Zhou Yu's correct command and resourceful Zhuge Liang, they found each other's weaknesses. 1 1 month, Cao Cao led100000 troops to attack Liu Bei. Zhou Yu, Huang Gai and others found that the serial ship had a fatal weakness that it was not easy to avoid fire, and decided to use fire attack; The southeast wind blows abnormally for several days in1February every year in Jiangnan; In order to facilitate the fire, Zhou Yu and Huang Gai used "risks", and Cao Cao was deceived. The allied forces made full use of the favorable conditions, so winning is a matter of course.

All the water forces of Battle of Red Cliffs and Cao Cao were lost, while the strength of Liu Bei and Sun Quan was greatly enhanced after Battle of Red Cliffs, and Cao Cao lost the opportunity to unify China in a short time.