Cold dew is the 17th solar term of the 24 solar terms and the fifth solar term of autumn. Douzhixin ; The sun reaches longitude 195°; It is celebrated on October 7-9 in the Gregorian calendar. Cold dew is the season of late autumn, and the beginning of the dry branch calendar month. Cold dew is a solar term that reflects the characteristics of climate change. When the cold dew enters, there is cold air to the south, the temperature difference between day and night is large, and the autumn dryness is obvious.
After the cold dew, the cold air in the north has a certain force, and most parts of China are under the control of cold high pressure, and the rainy season is over. Under the control of cold high pressure, the day is warm and the night is cool, and the day is often crisp. From the point of view of climate characteristics, during the cold dew season, the autumn sense in the south is getting stronger, the air is cool and the wind is cool, less rain and dry; Winter has begun to appear in a large area of the north. Traditional customs of cold dew mainly include appreciating maple leaves, eating sesame seeds, eating crabs, drinking autumn tea and so on