On August 7th or 8th every year, when the sun reaches 135, it is called beginning of autumn. Beginning of autumn's "standing" means beginning, and "autumn" refers to the mature period of crops. Beginning of autumn means that summer will cool off and autumn will begin. It is a solar term that reflects the season.

according to twenty-four solar term, "autumn is also a struggle, and things are gathered here". Beginning of autumn not only indicates that the hot summer is coming, but autumn is coming. It also means that the vegetation begins to bear fruit and bear children, and the harvest season is here. At this time, early rice harvesting and late rice transplanting in central China, and autumn crops entered an important growth and development period. 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.