There is an agricultural proverb that says: "The morning is autumn, and the chill is behind the ball;" The evening is autumn, and the old cow will die after autumn.

During the beginning of autumn season, there is a folk proverb: "The morning is autumn, and the evening is cold; It's autumn in the afternoon, it's hot as hell, old girl; It's autumn at night, and it's so hot. " This means that if beginning of autumn time is in the morning, the weather will be cool that night; If beginning of autumn time is in the afternoon, it will be hot for a while, and housewives will have to endure another sultry day; If beginning of autumn time is at night, it will be hotter for a while, and the ox can't stand it. When the sun reaches the longitude 135, it will be beginning of autumn. According to the "24 solar terms", autumn is also a struggle, and birds of a feather gather here. The ancients regarded the word "autumn" in beginning of autumn as composed of grain and fire, which meant that the grain was ripe, and beginning of autumn also meant that the grain began to mature. An agricultural proverb says, "On the 18th of beginning of autumn, nothing grows". The ancients looked to astronomy. At this time, Beidou points to the southwest, so the almanac says: "Fighting refers to the southwest, and Wei is beginning of autumn, which means that everything is killed. According to the instructions of autumn, the five grains are ripe. " Whether it thunders every day in beginning of autumn is particularly important for farmers. There are agricultural proverbs: "Thunder strikes in autumn, and the winter harvest is half", "Thunder strikes in beginning of autumn, and there is a drought of one hundred and eighty (ten days)". If there is lightning every day in beginning of autumn, the crops will fail; It will be a good year if the weather is fine. In fact, the impact of lightning on crops in beginning of autumn will not be so serious, but many crops will mature after beginning of autumn. In case of continuous cloudy autumn rain, mature beans, sesame, millet, rice, tobacco and so on. It will not be harvested, and it will even mildew and reduce production.