Air explosion is mainly used for ground killing, and another is underground explosion. The comprehensive destructive power of air explosion is the greatest (only the underground destructive power is not as good as the ground explosion). Ground explosion is the most unreal. The impact force on the ground or underground is the worst. Only the shock wave of about 180 can hit the ground target, which is easy to be blocked. The heat in the lower part of the fireball will be absorbed by the ground. So that air can't be compressed to produce shock waves? The shock wave of air explosion will rush to the ground one by one from the vertical downward and lateral angles, and will not be stopped.

? Besides, the empty crater is bigger than the ground explosion! The crater blasted by the largest nuclear bomb ground test in the United States is 1.5km wide and only 50m deep. In the crater of the czar's hydrogen bomb, highly compressed air smashed a crater more than 3 kilometers wide and 700 ~ 800 meters deep.