What do you mean by beginning of autumn's morning and evening?

Beginning of autumn is divided into morning and evening, which means that the time in beginning of autumn appears in the morning or afternoon.

Appear in the morning, saying that it is early autumn, and the afternoon is early autumn. Beginning of autumn is the 13 solar term among the 24 solar terms, with the Beidou bucket handle pointing southwest and the sun reaching the longitude of 135. The festival is celebrated every year from August 7th to 9th in the Gregorian calendar. Beginning of autumn is the first solar term and the starting point of autumn. Autumn begins in the beginning of autumn and ends in beginning of winter, which is the result of celestial movement.

Entering autumn means rain, storm, humidity, etc. At the turning point of the year, there is a downward or decreasing trend; In nature, everything begins to grow from lush to mature.