What is the principle of Zhuge Liang borrowing from the east wind when the Three Kingdoms burned Chibi?

The sacrifice of Zhuge in the Red Cliff burned by the Three Kingdoms was invented by Luo Guanzhong to show Zhuge Liang's wisdom. The fire in Chibi did happen, and Zhuge Liang did have the credit. He didn't borrow the east wind, but accurately predicted its appearance. He knows astronomy above and geography below. At that time, it was the time when the seasons alternated. Zhuge Liang calculated the time of the east wind just like the weather forecast, which enabled Zhou Yu to seize the opportunity of burning Chibi and contribute to the success of the war.