Cold Dew arrives on October 8. It is the 17th solar term of the 24 Solar Terms. It signals a further drop in temperature. Water vapor condenses into dewdrops, bringing colder weather than White Dew. Most parts of China enter deep autumn. Early frost appears in some northern areas, while heat fades away in the south with a growing temperature gap between day and night.
Nature begins to fade in Cold Dew, with grass and leaves turning yellow. Ancient Chinese people divided Cold Dew into three phenological phases: wild geese fly south; birds disappear and shellfish appear; chrysanthemums bloom. It is a good time to enjoy chrysanthemums and taste autumn tea. Farmers carry out autumn harvest and sowing activities.