The characteristics of the frost season are that the weather is colder in the morning and evening, and hotter at noon. The temperature difference between day and night is large, and autumn dryness is obvious.

Frost Descent is the eighteenth solar term among the twenty-four solar terms and the last solar term in autumn. After entering the frost season, the scene of late autumn is obvious, and the cold air moves southward more and more frequently. Frost does not mean "frost", but means a sudden drop in temperature and a large temperature difference between day and night.

The main climate characteristics of autumn are dryness and gradually cooler temperatures. After the frost, the temperature difference between day and night is greater. It is very cold in the morning and evening, but hot at noon. Autumn dryness is obvious. After the frost, the plants gradually lost their vitality and the earth became desolate. After the frost, the temperature difference between day and night is greater. It is very cold in the morning and evening, and relatively hot at noon. Autumn dryness is obvious. After the frost, the land became desolate.

In southern regions with latitudes, the average temperature is around 16°C, and there are still three solar terms left before the first frost date. During the frost season, the cool autumn wind has blown into the flower city of Guangzhou. The average temperature in northern Northeast China, eastern Inner Mongolia and most of northwest China is already below 0℃.

Frost customs

1. Drinking wine and admiring chrysanthemums

In meteorology, the first frost in autumn is generally called "early frost" or "chrysanthemum frost" "Because the chrysanthemums are in full bloom at this time, it is a good time to enjoy chrysanthemums. There is an ancient saying that "chrysanthemums bloom when frost strikes", so climbing mountains and admiring chrysanthemums has become an elegant event during the frost season.

2. Sweeping tombs and worshiping ancestors

"Qingtong Li" says: "On the New Year's Day, Cold Food and Frost's Descent Festival, we worship the tomb sweepers, and during the period, we visit the tombs in plain clothes, with wine, food and rice noodles. It is a tool for cutting grass and trees, sealing trees, and cutting thorns, so it is called tomb sweeping." It has been passed down to this day.