Beginning of autumn is the first solar term in mid-autumn in 1 and 24 solar terms, which marks the official start of the Qiu Meng season. "Autumn" means cool in summer. In early autumn, Beidou points southwest. From this day on, autumn began, the autumn was crisp, the moon was bright and the wind was clear. Since then, the temperature has gradually decreased from the hottest time. It also means that the vegetation begins to bear fruit and children, and the harvest season is here. In early autumn, there is a custom of offering sacrifices to the land gods to celebrate the harvest.

Beginning of autumn has arrived, but not in autumn. The division of climate seasons should be based on the "average climate temperature", that is, the average local temperature for five consecutive days is below 22℃, which is the real autumn. China has a vast territory and different climate. When we arrived in beginning of autumn, the phoenix tree began to shed its leaves, so there is an idiom "Autumn is known by falling leaves". Autumn is the transitional season when the weather turns from hot to cold, and then from cold to cold.