What's the common sense about Xiaoman?

Common sense about Xiaoman: 1, it rains a lot in the south and the temperature rises in the north; 2. Paddy field is the main farmland in southern China, and rice is the main food crop; 3. The farmland in the northern region is mainly dry land, and wheat is the main food crop; 4. Because of insufficient rain, the fields should be filled with water; 5. Sacrificing the car god is an ancient Manchu custom in some rural areas. Xiaoman is often the longest sunshine among the 24 solar terms.

During the Xiaoman solar term, there is usually a lot of rainfall in southern China. Due to the active warm and humid air flow in the south, it meets the cold air from north to south in the south of China at the intersection of Huangchi and Jiao Jiao. At this time, there will often be sustained and large-scale heavy precipitation in South China, causing heavy rain or torrential rain, just like the folk saying that "the river is easy to be full".

Jiangnan area, are often rivers and lakes. If there is little rain at this stage, it may be that the Pacific subtropical high is weak and located in the south, which means that it is Huangmei season. In the north, there is little or no rain in the solar terms, during which the temperature rises rapidly and the temperature difference with the south further narrows.

From the climate characteristics, during the period from Xiaoman solar term to Mang solar term, all parts of the country entered summer one after another, the temperature difference between north and south further narrowed, and the precipitation further increased. After Xiaoman, high temperature weather above 35℃ began to appear from the south of the Yellow River to the middle and lower reaches of the Yangtze River. Pay attention to heatstroke prevention at this time.