Frost's Descent, the last solar term of autumn, falls around October 23, when the sun reaches 210 degrees of celestial longitude, marking the transition from autumn to winter. There is a sharp temperature contrast between day and night, and early frost appears in northern regions.

Its three phenological phases are jackals stocking up on prey for winter, plants turning yellow and shedding leaves, and insects entering hibernation. Traditional customs include eating persimmons and enjoying chrysanthemums. An old folk saying goes that nourishing the body at Frost's Descent is better than a winter tonic.