Is October late autumn?

According to the query of Baidu Library, 10 (solar calendar) belongs to late autumn. Autumn, divided into early autumn, Mid-Autumn Festival and late autumn, should be divided according to solar terms; In early autumn, including beginning of autumn and summer heat, the solar calendar in beginning of autumn is from August 7 to 9, and the summer heat is from August 22 to 24. The Mid-Autumn Festival includes the Millennium and the autumnal equinox. The Millennium solar calendar is from September 7 to 9, and the autumnal equinox solar calendar is from September 22 to 24. The real autumn is marked by the autumn equinox. The latitude and longitude span of China is relatively large, and the temperature and crop harvest in the east, west, north and south are somewhat different.