What festival is the first frost? What solar terms does the first frost generally refer to?

1, the first frost is the eighteenth of the twenty-four solar terms. When the sun reaches longitude 2 10 degrees, it is the first frost solar term. Salary will be paid every year on the Gregorian calendar 10,123-24 October. The first frost is the last solar term in autumn and the transition from autumn to winter. 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.

2. 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". In the first frost season, everything is finished, everything goes to heaven, the sun goes to the ground, and the yin begins to condense. As the saying goes, "the first frost kills a hundred herbs." After the first frost, the plants gradually lost their vitality and the land was desolate.

The first frost doesn't mean "frosting", but it means that the temperature drops suddenly and the temperature difference between day and night is large. After the first frost solar term, the scene of late autumn is obvious, and the cold air goes south more and more frequently.