Frost's Descent is the 18th solar term of the 24 solar terms. Frost's Descent is the last solar term of autumn, which is the transition from autumn to winter. The characteristics of Frost's Descent are that the weather is colder in the morning and evening, and hotter at noon, with a large temperature difference between day and night and obvious autumn dryness. The late autumn scene after the solar term is obvious, and the cold air is moving south more and more frequently. We should pay attention to keeping warm.