Battle of Red Cliffs refers to the 13th year of Jian 'an (2008), when the joint forces of Sun Quan and Liu Bei defeated 800,000 Cao Jun in Chibi of the Yangtze River (now northwest of chibi city, Hubei Province), laying a famous battle for the tripartite confrontation among the three countries. This is one of the most famous wars in the history of China, and it is also the most famous one among the "three major battles" in the Three Kingdoms period. It is also the first large-scale battle in the Yangtze River basin in China history, which indicates that China's military and political center is no longer limited to the Yellow River basin. Sun and Liu led troops to attack by fire, and Cao Cao retreated to the north. Sun and Liu each occupy a part of Jingzhou.