Traditional Culture Encyclopedia - Weather inquiry - What do you mean, "When the clouds clear, it rains"?

What do you mean, "When the clouds clear, it rains"?

This is the popular explanation of weather and meteorology in ancient China. In other words, when two large clouds intersect, it is easy to rain heavily. Scientifically speaking, it is easy to rain because of the friction and collision between clouds, which leads to the change of temperature or the fusion of water.