Cao Cao and Battle of Red Cliffs launched Battle of Red Cliffs for several reasons, not just for a woman. The main reasons are as follows: 1. Unifying the world: So one of the reasons why people basically support it is that Cao Cao's most powerful strength at that time was enough to make Chibi begin to go down the river and make the next move to level the east of the river and complete reunification; 2. Historical reasons: The general trend is that the world will be unified and divided for a long time. Today, the land of the Central Plains was unified by Cao Cao. It's just that Sun Quan is partial to Jiangdong, and there will be a war sooner or later. Battle of Red Cliffs is nothing but Cao Cao's defeat, which leads to a tripartite confrontation; 3. Strong reasons: According to the situation at that time, Cao Cao was the strongest, but there were also strong neighbors on the side. According to Zhao Kuangyi, "How can others sleep soundly beside the recliner?"