What are the origins and customs of the cold dew solar terms?

Origin: Cold dew is the seventeenth solar term in the twenty-four solar terms of the lunar calendar, belonging to the fifth solar term in autumn, which indicates the official start of the autumn season. "Twenty-four solar terms" said: "In September, the dew is cold and will condense." Custom: According to the four-season health preserving theory of "nourishing yang in spring and summer, nourishing yin in autumn and winter". At this time, people should nourish yin and prevent dryness, moisten the lungs and benefit the stomach. As a result, people have the custom of "eating sesame seeds in cold dew".

In the Millennium season, the weather turns cold and dew begins to appear. Speaking of cold dew, dew increases and the temperature is lower. It's late autumn in the north, with white clouds and red leaves and occasional early frost. In the south, autumn is getting stronger and cicadas are dying. The Double Ninth Festival in the Millennium attracted many tourists.

In ancient China, the cold dew was divided into three stages: "The first stage was the swan goose; The second waiting sparrow is a clam; Three chrysanthemums have yellow flowers. " The "White Dew" solar term marks the change from hot to cold, the summer heat has not completely disappeared, and crystal dew can still be seen in the morning. Then the "cold dew" solar term is a symbol of cold weather, marking the transition from cool to cold. The dew is cold and radiant.

The cold weather with dew is very beneficial to the autumn harvest. There is an agricultural proverb: yellow fireworks should also be collected, and adult fish should also be collected with lotus roots. Soybean is harvested in the cold open air, pomegranate and hawthorn are picked. Cold dew peach is a late-maturing peach variety in the north, and its maturity is around cold dew peach, so it is named "cold dew peach".