My understanding of Xiao Xue.

Xiaoxue is the 20th solar term among the 24 solar terms, and the 2nd solar term in winter. The time is on Gregorian calendar1October 22nd or1October 23rd, that is, when the sun reaches 240 degrees of the yellow meridian. Light snow is a solar term reflecting precipitation and temperature, and it is a solar term with high frequency of cold wave and strong cold air activity. The arrival of the light snow solar term means that the weather is getting colder and colder and the precipitation is gradually increasing.

Xiaoxue solar term is a climate concept, which represents the climate characteristics during Xiaoxue solar term. Climate factors include precipitation, temperature and light, among which precipitation is an important factor of climate. Light snow is a solar term reflecting the changing trend of temperature and precipitation.

Xiaoxue is called Xiaoxue because "snow" is the product of cold weather. During this solar term, the climate is not deep and the precipitation is not heavy, so "light snow" is used to describe the climate characteristics during this solar term.

The term "light snow" in the name of light snow solar terms means that the temperature drops and the sky begins to snow, but the amount of snow is small, so it is called "light snow". The origin of light snow solar terms can be traced back to the Warring States period, when people divided a year into 24 solar terms to guide agricultural production according to the change of the sky and the difference of temperature. The specific time of the light snow solar term is1October 22nd or 23rd every year, 165438+, when the sun reaches 240 degrees of the yellow meridian.

The light snow solar term means that winter comes, the temperature drops gradually, the weather turns cold gradually, and it begins to enter the driest season of the year. At the same time, the light snow solar term is also an important period to remind people to pay attention to warmth, health and health care.

Light snow solar terms, the direct position of the sun has reached the southern hemisphere, and the northern hemisphere has begun to enter winter. At this time, the average temperature in the northern region has dropped below 0℃, and the temperature in the southern region is gradually decreasing. In addition, there are some special astronomical phenomena during the light snow solar term, such as the change of the moon phase and the direction of the Big Dipper. These astronomical phenomena are very important to ancient farmers and can guide people to arrange agricultural production and life.