Is it autumn after beginning of autumn?

It's not autumn after beginning of autumn.

This is what the old people often say: "It is not autumn in beginning of autumn, but it is cool after the Millennium". Although the solar term has arrived in beginning of autumn, it is not strictly autumn, and the leaves have not fallen. Beginning of autumn solar terms Most parts of China are still in summer, and only parts of the northwest and northeast will switch from summer to autumn during the beginning of autumn solar terms. The real large-scale entry into autumn will wait until the Millennium and the autumnal equinox.

Autumnal equinox introduction:

The autumnal equinox is the sixteenth solar term among the twenty-four solar terms and the fourth solar term in autumn. Fight refers to unitary; The sun reaches the yellow meridian180; Celebrated on September 22-24 of the Gregorian calendar every year. On the day of the autumnal equinox, the sun shines almost directly on the equator of the earth, and the length of day and night is equal all over the world. The autumnal equinox means "equally divided" and "equally divided", which means equally dividing autumn except day and night. After the autumnal equinox, the position of direct sunlight moves south, and the days in the northern hemisphere become shorter, the nights become longer, the temperature difference between day and night increases, and the temperature drops day by day.