In fact, the name first frost has existed since ancient times. The first first frost in ancient times was determined according to the direction of bucket handle, the Big Dipper. When it points southwest, it is called the first frost.

The temperature of the first frost solar term is cold in the morning and evening, hot at noon, and the autumn dryness is very obvious. It is called the first frost, which refers to the water vapor on the ground. Because the temperature difference changes, it meets the water droplets condensed by cold air, so it is called frost. It is not that the frost falling from the sky is a manifestation of the large temperature difference between day and night, so it is named the first frost, which means that the temperature drops sharply and the temperature difference between day and night is large.

What can I do in the first frost season?

When the first frost came, the temperature became lower and the green leaves changed color all over the mountain. ? Soothed by the autumn wind, the green leaves all over the mountain began to turn red and yellow, just like a big fire burning in Shan Ye. Like fire, it's spectacular.

It is also a great pleasure to enjoy the first frost and red leaves.

In the first frost, chrysanthemums are in full bloom in autumn, so many places in China will hold chrysanthemum viewing activities at this time. Enjoy flowers and drink.