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In midsummer, there is a folk saying that "clever clouds are seen in July and August", in which "clever clouds" refer to rain clouds.

The following will be explained in detail from three aspects: formation, characteristics and impact on the weather.

First, the formation of clouds

Clouds are water droplets or ice crystals condensed by water vapor in the atmosphere. In hot summer, when the surface temperature rises, the water vapor rises upwards and gradually cools, and clouds will form when it meets the lower air layer. This phenomenon is particularly obvious in July and August, so there is a saying that Qiao Yun can be seen in July and August.

Second, the characteristics of Qiao Yun

1. Multi-layer cloud pile: Qiao Yun is often in the form of multi-layer and distinct layers, fluffy as cotton candy, with different shapes.

2. Staggered clouds: Qiao Yun often presents crisscross and patchwork shapes, giving people a sense of visual layering.

3. Cloud color: The color of Qiao Yun is usually white or gray, but there will be some subtle color changes, such as orange or golden yellow, giving people a colorful feeling.

4. Cloud movement: Qiao Yun moves relatively fast, sometimes moving fast, and sometimes changing its shape quickly, giving people an unpredictable feeling.

Third, the influence of intelligent cloud on the weather.

1. Rainfall warning: Qiao Yun is a manifestation of rain clouds, which usually means that the possibility of rain in the sky increases.

2. Strong wind thunderstorm: The formation of intelligent cloud is often accompanied by strong convective activities, and it is prone to weather phenomena such as strong wind thunderstorm.

3. Relieve the high temperature: Due to the existence of intelligent cloud, it can block the direct sunlight, reduce the radiant heat on the ground, and play a cooling role to some extent.

To sum up, "seeing clever clouds in July and August" refers to the unique rain cloud type in summer, the characteristics of this clever cloud and its influence on the weather. By observing the shape and movement of Qiao Yun, people can predict the future weather changes and make reasonable arrangements for agriculture and travel. Qiao Yun is not only a miracle of nature, but also the crystallization of people's wisdom and life experience.