What does the first frost mean?

The first frost is one of the 24 solar terms, and it is the season with the largest temperature difference between day and night.

Because "frost" is a manifestation of cold weather and large temperature difference between day and night, it is named "first frost" to indicate that "the temperature drops suddenly and the temperature difference between day and night is large".

The "first frost" solar term reflects the climatic characteristics of the cold weather, but it does not mean that it will be "frost" when entering this solar term. In fact, "frost" didn't fall from the sky. The "frost" is the condensation of water vapor on the ground when it meets cold air due to the change of temperature difference. The solar term "first frost" has nothing to do with "first frost".

Generally, it appears on the 23rd or 24th of the Gregorian calendar 10 year 10, and the specific date will fluctuate according to the position of the sun. The first frost marks the approach of winter, the temperature drops gradually and frost begins to appear on the ground.

With the arrival of the first frost, the temperature in the northern hemisphere gradually dropped, and various places entered the cold winter one after another. At this time, frost began to appear in the northern region, and the leaves of plants gradually withered and withered. Some crops need to take corresponding anti-freezing protection measures before frost.

The custom of first frost

1. Eat persimmons: Persimmons mature in the first frost, so people in many places will eat persimmons in this solar term to celebrate harvest and gratitude.

2. Eat mutton hot pot: In some areas in the north, people will eat mutton hot pot in the first frost to welcome the cold winter.

3. Moxibustion: In some areas in the south, people will use wormwood as moxibustion in the first frost to drive away the cold and strengthen the body.

4. Wear autumn clothes: In the first frost and solar terms, the weather has become very cold, and people will start wearing autumn clothes to keep warm. The first frost solar term is an important solar term, and people will celebrate and welcome the coming winter in various ways.