When is autumn in early autumn?

The solar term "beginning of autumn" is one of the twenty-four solar terms in China, and beginning of autumn is the thirteenth solar term among the twenty-four solar terms, that is, when the sun reaches longitude 135, it is about 15 days after the summer solar term, which is the first solar term in autumn, generally in early August of the Gregorian calendar every year. Beginning of autumn time this year is August 7th 14: 54, so since the "beginning of autumn" solar term has passed, does it mean that autumn is coming?

Autumn has already begun, hasn't it?

This question can be said to be right or wrong. We should look at it from two aspects. The first aspect is from the perspective of the 24 solar terms in China. The twenty-four solar terms were summed up by our ancestors in their perennial life and work according to the changes of the four seasons. The 24 solar terms are determined according to the different positions of the earth on the ecliptic, reflecting the seasonal changes. They are important guiding strategies for agricultural production in China farming society, and also important basis for forecasting cold, warm, rainy and snowy weather in daily life.