1, ants move: the humidity of the air will be higher before it rains! The long-term survival and evolution of ants, which nest underground, make them very sensitive to the change of air humidity. When the humidity increases, ants will feel dangerous in low places and move to high places! We humans are also very smart. When we saw the ants moving, it rained!

2. Dragonflies fly low: Because the air will be wet before it rains and the dragonfly wings are thin, the moisture in the air will adhere to the dragonfly wings! It puts some pressure on dragonflies, so they can't fly high! So when everyone saw the dragonfly flying low, they said it was going to rain! Or dragonflies fly very low near streams or beaches for the same reason.

3. The formation of lightning: positively charged clouds meet negatively charged clouds, and a large number of electrons are displaced to generate electricity, resulting in a large number of gorgeous lightning.

4. The sheep is a "hygrometer". If the goat lies under the eaves, it will rain. Sheep jumping on the grass will be sunny.

In spring and summer, frogs croak loudly and densely, which indicates that it will rain soon. The proverb says, "When a toad shouts, it must be raining heavily".