It is coldest in September, and it begins to pick up in September.

Generally, it will be warm after the Ninth Five-Year Plan.

Many people think that three or nine days is the coldest among nine years old. In fact, 49 days is the coldest period of nine years old. Only on March 9, the temperature changed greatly, and the body was stimulated by the outside world, which made the temperature cold at this time. On April 9, although the temperature was lower than that on March 9, the temperature difference did not change much, and it didn't feel as cold as on March 9.

The coldest time in a year is 349 days, but there is another saying that it is cold for nine days, and it will be cold from September to September, with different degrees of cold. /kloc-no shooting in 0/929, walking on the ice in 3949, and watching willows along the river in 5969. It began to get warmer after May 9th, but it was still winter. The number nine is counted from the winter solstice in the 24 solar terms, and every 9 days is counted as 19, and so on. Generally, March 9 is the coldest time in winter. After counting to 99 days (998 1 day), it is time for spring to warm the earth and everything to be full of vitality. "99" is the product of ancient farming culture in China. It is unknown when it appeared, but it has been passed down from mouth to mouth among the people since ancient times.