What kind of weather is Meiyu, and where does it usually happen?

The precipitation in eastern China is mainly caused by the summer monsoon. When the warm and humid airflow of summer monsoon logs northward and meets the cold air from north to south, the lighter warm and humid airflow will be lifted into the cold air because the warm air is light and the cold air is heavy. In the process of warm and humid airflow rising, due to the continuous decrease of temperature, water vapor will cool and condense to form rain clouds, which are called frontal rain. Frontal rain covers a wide range and often forms rain belts. In the early summer of each year, the winter and summer monsoon in the middle and lower reaches of the Yangtze River is evenly matched. This rain belt lingers here, with continuous rainfall 1 month. At this time, plums are in the yellow mature season, so people call it rainy season. In July and August, just after the rainy season, with the northward retreat of the winter wind, the rain belt moved out of the middle and lower reaches of the Yangtze River, and the weather was sunny and dry, also known as summer drought.