It starts to get warmer in September.

Counting nine songs is also called "Jiujiu Quhan Song". After the solstice winter, nine days later, the weather will get cold and spring will come. Nine days is the coldest time of the year. In the traditional culture of China, nine is an extreme number, which has the greatest and most significance. Nine nines have reached the maximum time limit. The ancients thought that after 998 1 day, spring must have arrived.

It starts to get warmer in September.

Folk proverb about nine days: 1929, hands in your arms; 3949, frozen pigs and frozen dogs; 5969, look at the willows by the river; 79 ducks and 89 geese; In 7963, pedestrians put clothes lists, and in 998 1 year, Tian Zhongli cultivated land for the elderly. This is a summary of the people's years of experience. It can be seen that by May 9, the weather will slowly pick up and the willows along the river will begin to sprout. On July 9, people will gradually take off their thick clothes. 1999, the weather will be completely warm, and they will get ready for spring ploughing.

3949 is the coldest period in September, and 3949 is colder than 499. According to the temperature, April and September are the lowest and should be the coldest. However, in the first few days of March 9, the temperature changed greatly, and the body did not adapt, so it was particularly cold. At 49 o'clock, although the temperature is lower than that at 39 o'clock, the temperature difference between 49 o'clock and 49 o'clock is small, so people will feel less cold than when they enter from 29 o'clock to 39 o'clock.