Analysis:

Why do you say, "Why ask God when the bell rings in the distance?"

This proverb means: the bells in the distance can be heard clearly, and the weather will be fine in the short term. Bells spread in the atmosphere, sometimes clearly audible, sometimes weak. The reason is that the composition of air and the direction of air flow have been changing.

On sunny days, there is less water vapor and dust in the air, the air layer is stable, and the sound wave is less lost in the propagation process. In addition, if the air flow is consistent with the sound wave propagation direction, the sound coming is particularly clear. On the contrary, when the weather turns bad, the water vapor in the air increases, the gas layer is unstable, the convergent updraft is strong, and the sound waves are reflected, disturbed and lifted, making the sound weaker. Therefore, as long as the sound comes from a fixed place, we can predict the short-term weather changes according to the sound size.