What does it mean that everything returns to the autumn harvest?

Agreeing that everything will go to the autumn harvest means that everything will go together to meet the outdated harvest in autumn.

This is a beautiful early autumn language. Beginning of autumn is one of the 24 solar terms in the lunar calendar, and beginning of autumn indicates the beginning of autumn.

The original sentence is beginning of autumn, the summer fades, and everything returns to the autumn harvest. The meaning of this sentence is that beginning of autumn is an agreement that the summer heat has passed and everything will go together to meet the outdated harvest in autumn.

Beginning of autumn is the third hot solar term among the 24 solar terms, second only to Daxia and Xiaoxia. According to the order of solar terms, beginning of autumn is followed by summer, and autumn is the second solar term "Summer comes" (the last summer). Twenty-four solar terms include "three summers" (little summer, big summer and midsummer), and there is a "beginning of autumn" solar term in the middle of the "three summers", followed by summer (last summer) after beginning of autumn.

"Three Summers" and "Dog Days" both represent hot and humid weather, and "Dog Days" involve four solar terms: Little Summer, Big Summer, beginning of autumn and Early Summer. Among the 24 solar terms, the days in summer are longer.