What does the weather forecast icon hat mean?

A weather hat is a metaphor that compares clouds to hats and uses clouds to judge the weather. The hat with a rainy mountain hat refers to the clouds. The next sentence of this sentence is "without rain, the mountain is as deep as its waist." This sentence is a folk proverb and was recorded in the second volume of the first year of primary school Chinese. The full sentence is "Don't go out in the morning glow, but the sunset travels thousands of miles. Wear a hat on a mountain with rain, and wear a hat on a mountain without rain." "Wear a hat on a mountain with rain. "Halfway up the mountain without rain" means: when it rains, the clouds will float on the top of the mountain, just like the mountain wearing a hat; but when there is no rain, the clouds will float on the mountainside.