What's the next sentence in the weather proverb?

The next sentence of the hook cloud in the sky is: it's raining on the ground.

Sometimes there will be a dazzling white cloud in the sky, like feathers or ponytails. One end of the cloud is a comma shaped like a punctuation mark, which is what the proverb says. Hook cloud is the "vanguard" of cold air. Hook clouds or cirrus clouds often indicate the direction of low pressure movement and become a precursor to rainfall.

Weather proverbs refer to folk words that predict weather changes. For thousands of years, human beings have been trying to make accurate weather forecasts.