Among the Three Kingdoms, Kong Ming went out to Qishan in the sixth Northern Expedition and defeated Sima Yi. Zhong Da was trapped in the valley above and burned by an unprecedented fire. Zhong Da was almost desperate.

Had it not been for the sudden heavy rain, the armies of Zhong Da and Cao Wei might have recognized the above valleys.

There is a reason why Kongming didn't order archery when it rained heavily in the valley above. First of all, he doesn't need to shoot arrows. Without this heavy rain, Zhong Da would have died. The valley above is very dangerous, and there is a lot of dry wood piled up in it. Just put a rocket on it, there is no need to gild the lily. The valley above the cemetery chosen by Zhuge Liang for Sima Yi and Wei Jun can only accommodate a few people. Kongming fired rockets from the surrounding heights, and Zhong Da and his son could not escape.

Although Kong Ming knows astronomy above and geography below, he miscalculated this time. He only knows that Zhong Da can enter the valley above, and his own fire attack plan is really feasible. But he didn't expect that "destiny lies in Wei", and this wonderful plan was destroyed by a heavy rain. The rain was really timely for Zhongda, but it was like a bolt from the blue for Kong Ming. Seeing the heavy rain, Kong Ming knew that Sima Yi was about to get out of trouble and the tide was gone. It doesn't make sense to shoot Wei Jun with an arrow again.

Second, Zhuge Liang did not prepare a large number of bows and arrows. Shu and Han went north for years, and their national strength was almost exhausted, especially military materials, which were extremely scarce. However, the manufacturing industry in Shu-Han period was far less developed than that in Cao-Wei period. Consumables such as arrows are only used once, and the speed of replenishment is far behind the speed of consumption. If Kongming consumes the remaining arrows, he can only be a sitting duck for Wei Jun.

For example, in Battle of Red Cliffs, Cao borrowed arrows from the ship and borrowed100000 arrows in one night. Cao Jun's arrows are like free banknotes, which can be obtained infinitely. This is based on a strong industry, while Han Shu's manufacturing industry is very weak. If you use the arrow without any worries, it will be consumed in a few days. Since Shu Han doesn't have a lot of arrows, they won't be wasted, so they must be used sparingly. It is certain that the valley above burned down Zhong Da. Due to the hasty March, Kong Ming is unlikely to prepare a large number of arrows for emergencies.

Third, even if Kongming prepared a large number of arrows, he could not destroy the armies of Zhong Da and Cao Wei. At this time, in the valley above, the sky is raining cats and dogs, and the ground is filled with smoke, which greatly interferes with the archers' sight. No matter how good the shooter is, he can't hit the target in this environment. Most of Cao Wei's troops have armor to protect important positions. In addition, due to the long distance, Shu Han's bows and arrows have limited lethality. Even if Kongming prepared a large number of arrows, thousands of arrows would be launched immediately, and not many Wei Jun would be destroyed.

Kong Ming painstakingly planned the Battle of Shanggu. Originally, it was a sure thing. Unexpectedly, the sudden heavy rain doused the fire he had prepared for Sima Yi, and at the same time doused his heart of reviving the Han Dynasty. At that time, when Kong Ming saw the heavy rain, he was flustered, so he didn't order archery.