What does the solar term cold dew mean?

We all know that China not only has four seasons, but also has 24 solar terms based on the four seasons. Each season is divided into six small solar terms, and the name of each solar term is very particular, because this is the calendar used by our ancients to remind farming. So what does the naming of cold dew mean in the 24 solar terms?

Cold dew: the temperature drops, there is condensation in the air, and there is a chill gradually.

The cold dew solar term begins at the end of the first ten days of 10 and ends at the end of 10. The direct point of the sun continued to move southward in the southern hemisphere, and the angle of sunlight in the northern hemisphere began to tilt obviously. The solar heat received by the ground is obviously less than that in summer, and the influence of cold air can sometimes extend to South China.

There is a proverb in Guangdong: "Cold dew spans three dynasties, and you need to find a bridge after crossing the water", which means that the weather is getting cold, but you can't wade across the river or go barefoot as before. It can be seen that during the cold dew period, people can obviously feel the seasonal changes. More regions and more people began to use the word "cold" to express their feelings about the weather.

When the sun moves to longitude 195 degrees, it is the cold dew of the 24 solar terms. "Cold dew" means that the temperature in this period is lower than that in "White dew", and the dew on the ground is colder and will soon condense into frost. Twenty-four solar terms: "September solar terms, dew will condense when it is cold."

If the "white dew" solar term marks the change from hot to cold, then the summer heat has not completely disappeared, and crystal dew can still be seen in the morning. Then the "cold dew" solar term is a symbol of cold weather, marking the transition from cool to cold. The dew is cold and radiant. As the saying goes, "cold dew cold, Coody Leng everywhere dew".

The sudden drop in temperature is a feature of the cold dew solar terms. It is common for the temperature to drop by 8℃ and 10℃ after the autumn rain brought by a strong cold air. However, most stormy weather does not last long (except West China). Controlled by cold and high pressure, it is warm during the day, cool at night and crisp in autumn during the day.

From June 5th to 10, the regional difference of the average temperature distribution in China is obvious. The average temperature in most parts of South China is above 22℃, and it is even higher in Hainan, which is above 25℃, and it has not yet come out of summer. Jianghuai and Jiangnan are generally between 15℃ and 20℃, and the southeast, North China and Huanghuai are between 8- 16℃. At this time, the average temperature in parts of the northwest and north-central northeast has reached below 8℃. The average temperature in some plateau areas of Qinghai Province is even lower than 0℃.

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