What does beginning of autumn mean? Is it one of the solar terms?

Beginning of autumn is the13rd solar term among the 24 solar terms in the lunar calendar, and it is also the first solar term in autumn, which marks the official start of the Meng and autumn seasons: "Autumn" means that summer is cool. When we arrived in beginning of autumn, the phoenix tree began to shed its leaves, so there is an idiom "Autumn is known by falling leaves". Literally, the word "autumn" consists of "valley" and "fire", indicating the maturity of five grains. Autumn is the transitional season when the weather turns from hot to cold, and then from cold to cold.

Beginning of autumn, July Festival. Make a word to understand spring. In autumn, things are different here.

Beginning of autumn has arrived, but not in autumn. The division of climatic seasons should be based on the "average climate temperature", that is, the local average temperature is below 22℃ for five consecutive days, which is the real autumn. China is a vast country. Although the climate varies from place to place, most areas have not yet entered the autumn climate, and the last days of dog days are still the third day after beginning of autumn. Especially in the south of China, this solar term is still a hot summer. At the same time, because the typhoon and rainy season are about to pass and the temperature is even hotter, TCM calls the period from beginning of autumn to the autumnal equinox "long summer".