What does it mean to hear "It's so hot after beginning of autumn"?

There is a folk saying that "the heat is in the dog days", and sometimes it is still hot after the dog days. This is the so-called "summer cooling after autumn". This means that after the solar term in beginning of autumn, the hot weather will last at least one to two weeks. The Autumn Tiger that people talk about is mostly about this period.

At this time, although the weather is still unbearable, it is getting colder. As the agricultural proverb goes, "beginning of autumn is cool in the morning and evening and sweaty at noon". People can adjust their diet to prevent heatstroke and cool down, such as cooking mung bean soup, or cooking soup with mung beans, honeysuckle, lentils and wax gourd, and then adding duck meat, melons and fruits, sugar, coix seed, gordon euryales and other foods. These dietotherapy have the efficacy of clearing away heat and toxic materials, and are the best tonics in summer.