What does late autumn mean?

Late autumn refers to the September of the lunar calendar, which comes from the Book of Beginners and is quoted from the Compilation of Emperor Liang Yuan of the Southern Dynasties: "September is the autumn season, also known as late autumn and late autumn."

With the arrival of the first frost, autumn is drawing to a close, the warmth is brushed away, and there is no chill. This tender festival has quietly passed away. Trees are rustling, and red maple is rustling. The autumn wind is coming, and it is full of chill. Autumn wind and rain are strong.

The autumnal equinox is the sixteenth of 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.