What did Zhuge Liang borrow in Battle of Red Cliffs?

In history, Zhuge Liang took advantage of the east wind to attack Battle of Red Cliffs, and the general process was as follows: in July of 13th year, Cao Cao went south to Jingzhou in August, where Liu Biao was killed, and his youngest son, Liu Cong, succeeded to the throne and settled in Xiangyang. In September, Cao Cao went to Xinye, Liu Beitun was in San Francisco, and Liu Cong won without a fight. Liu Bei quickly retreated to the south and lost his throat. Cao Cao marched into Jiangling and conquered Jiangnan in October, and Zhuge Liang sent messengers to Jiangdong. Sun Quan decided to unite Liu Kangcao, appointed Zhou Yu and Cheng Pu as the left and right supervisors, and Lu Su as a captain of Zanjun. From 1 1 to 65438+2 to join Liu Bei's army in Chibi, Sun and Liu fought together in Chibi for the first time.

Cao Jun retreated to Jiangbei Wulin District. Cao Jun is ill. Many officers died, but the warships were still connected. Huang Gai pretended to surrender, burned Chibi, defeated Cao Jun, and Cao Cao returned from Huarong Road North. Of course, Zhou Yu, one of the heroes of Chibi Campaign, was unknown. The other is his partner and enemy Zhuge Liang, who loves and hates each other. Zhuge Liang's story is familiar to readers. Luo Guanzhong used a lot of artistic means in The Romance of Three Kingdoms, which surprised readers with Zhuge Liang's stormy waves and calculating ability. On the eve of Battle of Red Cliffs, Zhou Yu prepared to launch a fire attack, burn down Cao Cao's warships and defeat Cao Cao. But Zhou Yu made a mistake in a hurry. He didn't expect that the fire had a high demand for wind direction. In winter, the northwest wind in the middle reaches of the Yangtze River is stronger than the southeast wind. If the northwest wind ignites, Cao Jun is at the top. He just set himself on fire, but he couldn't burn Cao Jun at all.

Zhou can't figure out a way. He suddenly fell ill. At that time, Zhuge Liang helped Zhou Yu make suggestions. Knowing the cause of Zhou Yu, he gave Zhou Yu a prescription: "If you want to defeat Cao Jun, you must attack with fire." . Everything is ready except the east wind. Zhou Yu asked Zhuge Liang to find a way to "build" the east wind, and Zhuge Liang immediately agreed, "You can borrow it." So Zhou Yu found someone to build a seven-star altar. Zhuge Liang pretended to be on the altar. On the day of the battle with the east wind, a strong southeast wind blew. Zhou Yu took the opportunity to attack Cao Jun.

In fact, Zhuge Liang is good at predicting the weather. He knows from the weather forecast that there is a southeast wind today. He has never been borrowed. This is just a practice of Zhuge Liang's meteorological knowledge. How did Zhuge Liang know that the southeast wind would blow in Battle of Red Cliffs? When will it explode? Chibi lies in the middle reaches of the Yangtze River in East Asia. In winter, the land temperature drops faster than the ocean, so cold high pressure, such as Siberian high pressure, often forms in Central Asia. In this way, the northwest wind in Chibi area should prevail.