Will the temperature drop in early autumn?

Beginning of autumn will not get cold immediately, but it will get cold gradually after beginning of autumn. Beginning of autumn is the hottest time. On August 7th or 8th every year, when the sun reaches longitude 135, it is beginning of autumn. "Twenty-four solar terms": "On the day of July, the word will be released in spring (beginning of spring). Autumn, hey, everything is gathered here. " Beginning of autumn generally indicates that the hot summer is coming to an end and autumn is coming. After that, although the summer heat in early autumn is hard to get rid of, there are also "autumn tigers", and beginning of autumn is also called beginning of autumn, but the general trend is that the weather is getting colder and colder. Due to the different climates in different parts of the country, the start time of autumn is also different. In climatology, the average daily temperature in beginning of autumn drops below 22℃ every five days. This division method is in line with the actual situation in various places, but it is quite different from the date of beginning of autumn in the middle and lower reaches of the Yellow River. After beginning of autumn, early rice harvesting, late rice transplanting and big autumn crops in central China entered an important growth and development period. Autumn means that summer gets cold and autumn begins. The ancients regarded beginning of autumn as an important moment at the turn of summer and autumn, and always attached great importance to this solar term. In ancient China, beginning of autumn was divided into three periods: "when a cool breeze blows gently;" Hou Bailu was born; Wait for three cool. " It is said that after beginning of autumn, people will feel cool when it is windy, and the wind at this time is different from the hot air in summer; Then, there will be fog on the earth in the morning; In autumn, gloomy cicadas also began to sing. According to records, the plane tree planted in the basin was to be moved into the temple in the autumn palace of the Song Dynasty. It's time for beginning of autumn again. Tai Shigong said loudly, "It's autumn." After the competition, the phoenix tree will leave one or two leaves to represent autumn. In fact, according to climatological standards, autumn only begins when the average daily temperature is lower than 22℃ in the second half of the year. Except that it is winter all the year round, and there is no summer between spring and autumn, there are few "beginning of autumn" in China.