Zhuge Liang's Astronomical Geography

Zhuge Liang's design of burning Sima Yi was strategically successful, but he did not consider the negative impact of the terrain at that time.

In order to destroy the enemy, he led the enemy into a basin-shaped valley, then sealed the exit and set fire to it. Until this step, there is no problem.

But then, with the spread of the fire, the temperature at the bottom of the valley rose, and the air accumulated at the wet bottom became hot. A large amount of hot air rises to the top of the mountain, cools down when it meets cold, accumulates continuously, forms precipitation clouds, and then precipitation becomes rain.

This will not happen in all places, but the season, place and weather of this battle are in line with the conditions for the formation of this phenomenon, so the possibility of rain can be said to be great.

If Zhuge Liang is really as magical as in the novel, it is really a mistake that he doesn't count this. Or an adventure, perhaps this is more in line with Zhuge Liang's style. Knowing that Guan Yu values righteousness, he will probably release Cao Cao and send him to Huarong Road. Knowing that Ma Su was too conceited and probably headstrong, he still sent him to guard the street pavilion. Maybe he was gambling, some won and some lost. After all, the strategist is not a fairy. If everything can be figured out, Liu will not die, and the world will be unified long ago.