The Interpretation Significance of The First Frost

First of all, Frost explained as follows:

The first frost said that the weather was colder and the dew condensed into frost. Frost is the condensation of water vapor when the ground encounters cold weather, which means that the weather is cold and the earth will produce the first frost. The solar term of the first frost means that the weather is getting colder and first frost begins.

The first frost is the eighteenth of the twenty-four solar terms and the last solar term in autumn. Fight with your fingers; The solar calendar is 210; Celebrate every year on the 23rd to 24th of the Gregorian calendar 10 year 10. After entering the first solar term in first frost, the scene of late autumn is obvious, and cold air moves southward more and more frequently.

The first frost does not mean "frost", but refers to the sudden drop in temperature and the large temperature difference between day and night. On the national average, "first frost" is the season with the largest temperature difference between day and night in a year.

In the first frost season, it's all over. From the morning, the sun went down to the ground, Yin Qi began to condense, and the first frost weather became colder and colder. Because "frost" is a manifestation of cold weather and large temperature difference between day and night, it is named "first frost", which means "sudden drop in temperature and large temperature difference between day and night".

The first frost solar terms are characterized by cold weather in the morning and evening, hot weather at noon, large temperature difference between day and night, and obvious autumn dryness. The solar terms in the first frost mainly include the customs of enjoying chrysanthemums, eating persimmons, climbing high and overlooking, and tonic.

Historical origin:

The first frost is the last solar term in autumn and the transition from autumn to winter. In the first frost season, everything is finished, everything goes to heaven, the sun goes to the ground, and the yin begins to condense. The cold weather began with the first frost.

Yizhoushu Zhou said, "Autumn and March are in the middle of Qi: summer, autumnal equinox and first frost." In Lun Heng, Wang Chong of the Eastern Han Dynasty said: "Clouds and fog are also signs of rain, while summer is dew, winter is frost, temperature is rain, cold is snow, and rain and dew are frozen, all from the ground, not from the sky."

Whether it is dew or frost, "it comes from the ground, not from the sky." How can it be called first frost? In fact, the name "first frost" is only used to describe the climate characteristics of sudden drop in temperature and large temperature difference between day and night.

Because "frost" is a manifestation of cold weather and large temperature difference between day and night, it is named "first frost" to indicate that "the temperature drops suddenly and the temperature difference between day and night is large". The first frost solar term reflects the climatic characteristics of the cold weather, but it doesn't mean that the frost will fall when entering this solar term.