The relationship between the first frost and autumn.
1, the first frost is one of the twenty-four traditional solar terms in China and the last solar term in autumn. The arrival of this solar term marks the end of autumn and the beginning of winter. In autumn, the weather gets colder and the temperature difference between day and night begins to increase. With the arrival of the first frost, this temperature difference becomes more obvious. After the first frost, the temperature gradually dropped and the weather became cold.
2. The first frost, as the name implies, refers to the phenomenon that the temperature begins to drop obviously during the first frost solar term, especially at night, the surface temperature may drop below 0℃, resulting in frost. This is why after the first frost, we often see leaves and plants covered with a thin layer of frost.
Autumn is also the harvest season of the year. Before the first frost, farmers were busy harvesting crops, such as rice and corn. After the first frost, farmers will be relatively relaxed because the temperature drops and the growth rate of crops slows down. During the first frost, meteorologists will pay close attention to the changes of meteorological elements such as temperature, wind direction and humidity in order to better predict the future climate trend.
Legends and stories about the first frost
1. It is said that when Zhu Yuanzhang was young, he was exiled to northern Anhui because of the war, which happened in the first frost at that time. He fainted under a persimmon tree because of hunger, was rescued by a kind-hearted person and had a persimmon meal, thus saving his life. Zhu Yuanzhang joined the rebel army and eventually became the leader of one side. In order to repay the kindness of persimmon, he ordered the persimmon tree to be named Ling Shuanghou to show his respect and gratitude.
2. There are still some places where the legend of "frost hits the depression" is circulated. This legend tells us that after the first frost, depressions are vulnerable to frost. Because cold air tends to gather in depressions, the temperature drops and frost is produced. This is why after the first frost, we should pay more attention to the weather changes and take preventive measures.
There are legends about "frosting" in some places. According to legend, in the first frost season, if couples quarrel or the family is not harmonious, it will attract "first frost". This legend tells us that family harmony is very important in the first frost season because it can bring good luck and good weather.