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Where did the east wind come from in the Battle of Chibi?

The east wind in the Battle of Chibi was a change in the weather, and a southeasterly wind began to blow.

In The Romance of the Three Kingdoms, Cao Cao said: "At the beginning of winter, the southeast wind occasionally blows from Jiangdong. Why is it so strange?"

"Three Kingdoms, Biography of Zhou Yu" says: "Quan then sent Yu and Cheng Pu and others fought against Cao Gong together with Bei. At that time, Cao Gong's army was already sick. In the first battle, the army was defeated and retreated to the north of the Yangtze River. "

Notes on "Three Kingdoms". Pei Songzhi said: "As for the battle of Chibi, it was definitely a matter of luck. In fact, the epidemic was spreading, which damaged the front. The wind came from the south and became the power of Fenru. It was not a human thing to do it."

In other words, there was indeed a southeasterly wind that day. But it was not borrowed by Zhuge Liang, but a coincidence. According to historians' research, the Puqi Red Cliff now located on the south bank of the Yangtze River in Hubei Province is the most "authoritative" Red Cliff. In Hubei Province, it is not uncommon to have southeasterly winds in winter. (Having said that, even in the north, the northwest wind does not blow every day)

This wind was only advantageous to Liu Bei and Zhou Yu (history books indicate that Zhuge Liang was not on the front line during the Battle of Chibi). It's just a situation. A very important point is that Cao Cao's soldiers were not burned back. The main reason was that the plague among Cao Cao's troops caused a decline in combat effectiveness. That fire was just a boost.