The first frost is the introduction of which solar term is the first frost solar term among the 24 solar terms.

1, 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; Salary will be paid every year on the Gregorian calendar 10,123-24 October. The first frost solar terms are characterized by cold weather in the morning and evening, hot weather at noon and large temperature difference between day and night.

2. Because "frost" is the performance of cold weather and large temperature difference between day and night, the "first frost" is named as the season of "sudden drop of temperature and large temperature difference between day and night". The first frost solar term, everything ends, ends, the sun goes down to the ground, and the yin begins to condense. The first frost does not mean "frost", but refers to the sudden drop in temperature and the large temperature difference between day and night. After the first frost solar term, the scene of late autumn is obvious, and the cold air goes south more and more frequently.