What month is Huangmeitian?

The first day after the awn seeds were mildewed, and the first day after the slight summer heat was not mildewed. Mold always enters from June 6 to 15, and mold always leaves from July 8 to 19. There is an obvious rainy season in eastern China, with a long rainy season and relatively concentrated rainfall. This is caused by the north-south displacement of the main rain belt in the east-west direction, which is a unique phenomenon of atmospheric circulation in East Asia during the seasonal change at the turn of spring and summer.

Plum entry: the average temperature exceeds 22℃ for five consecutive days, and it is considered as plum entry when it rains for four consecutive days.

Plum blossom: On the other hand, if the temperature exceeds 30℃ for five consecutive days and it doesn't rain, it means plum blossom.

The middle and lower reaches of the Yangtze River in China are usually rainy from mid-June to early July every year. In the past few days, the sky has been overcast, and the precipitation has been continuous, sometimes big and sometimes small. Therefore, there is a popular proverb in the south of China: "Rain hits plum blossoms, and the sun can't be seen for forty-five days". Continuous rain, high temperature and high humidity are the main characteristics of plum rain.