What is the first phenology in early autumn?

When the cool breeze comes. It means that people will feel cool when there is wind. The wind at this time is different from the hot air in summer.

Beginning of autumn is the 13 solar term among the 24 solar terms in the lunar calendar, and it is also the first solar term in autumn, marking the official start of the Qiu Meng season. "Autumn" means cool in summer. 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. In ancient China, beginning of autumn was divided into three periods: "A cool breeze blows gently; Second, wait for the white deer to be born; Third-class chilling. " Waiting means that people will feel cool when it is windy. The wind at this time is different from the hot air in summer. The second kind of weather means that there will be fog on the earth in the morning. The third kind of weather means that cicadas who sing on cloudy days in autumn also start to sing.