What are the characteristics of solar terms in beginning of winter?

The solar terms in beginning of winter are characterized by the transition from dry to rainy, cold and frozen.

In early winter, the sun has reached the longitude of 225 degrees, the sunshine time will continue to be shortened, the height of the sun will continue to decrease at noon, and the amount of solar radiation obtained by the northern hemisphere will be less and less, but there is still some energy in the heat stored on the surface in the second half of this year. Because there is still "accumulated heat" on the surface, it is usually not very cold in early winter, and the real cold is after the winter solstice.

Due to the large span between north and south in China and the great climate difference between north and south, the winter with this climatic significance is obviously late for some parts of China. After winter, the climate changes from dry autumn to rainy and cold winter.

Beginning of winter phenomenon

Beginning of winter means that everything begins to enter a state of recuperation. Wu Cheng, a scholar in Yuan Dynasty, compiled twenty-four solar terms, in which he divided the twenty-four solar terms into seventy-two periods, and each solar term was divided into three periods.

The three seasons in beginning of winter are: "As soon as the water waits, the ice begins;" The second waiting place began to freeze; Waiting for the flood is a cockroach. " It means that water can turn into ice at this time; The land also began to freeze; The pheasant in the flood is a pheasant, which means a big bird like a pheasant. The pheasant is a big clam. After beginning of winter, big birds like pheasants were rare, but you can see big clams with similar lines and colors at the seaside. Therefore, it is believed that pheasants will become giant clams in early winter.

Refer to the above content: Baidu Encyclopedia-beginning of winter