Briefly describe the plot of Zhuge Liang’s clever use of the east wind

Everything was ready before the Chibi War, but the most critical wind direction changed from the southeast to the northwest. Zhou Yu became sick from sorrow because of this, so Zhuge Liang allowed him to borrow the southeast wind for seven days and seven nights to help him. He defeated Cao Cao, and at the same time Zhuge Liang also wanted to leave Soochow and return to Liu Bei's army in Xiakou. Because he expected that Zhou Yu would not tolerate him after successfully borrowing the wind, he prayed to heaven with his sword at the Seven Star Altar in Nanping Mountain, and finally borrowed it. With the southeast wind blowing, Zhuge Liang also left one step ahead of the people sent by Zhou Yu to chase him.