Summer (end? Yes? Hot) is the fourteenth solar term among the twenty-four solar terms, and autumn is the second solar term. Summer, that is, "summer", means that the hot summer has passed, and the dog days have passed or will soon end, and the date is on August 22-24 every year.
In summer, the direct point of the sun continues to move southward, the solar radiation weakens, the subtropical high also withdraws southward, the temperature gradually drops, and the summer heat gradually disappears. The arrival of summer means that the hot and difficult weather is over. During this period, the weather is still hot, but it has shown a downward trend. Summer is a solar term that reflects the change of temperature, and this solar term also means entering the autumn with meteorological significance. There are many folk activities in summer, such as eating ducks, setting off river lanterns, opening fishing festivals, decocting medicinal tea and offering sacrifices to the land.
The weather features in autumn are refreshing:
The cold high pressure that began to affect our country, under its control, formed sinking dry cold air, and took the lead in announcing the end of the rainy season in Northeast China, North China and Northwest China and starting the best weather in a year. In summer, only the northeast and northwest regions really enter autumn. But whenever cold air affects China, if the air is dry, it will often bring windy weather, and if there is warm and humid airflow in the atmosphere, it will often form a decent autumn rain.
After every storm, especially after the rain, people will feel more obvious cooling. So there is a saying: "an autumn rain (wind) is a cold." There may be a large precipitation process in the north and south Jianghuai areas. The temperature dropped significantly, and the temperature difference between day and night increased. It is sunny after the rain, and people often don't adapt to the cold and hot changes at the turn of summer and autumn. Careless can easily lead to respiratory diseases, gastroenteritis, colds and other diseases, so it is called "eventful autumn".