Multiple choice question: What is the turn of winter and spring?

Beginning of spring is the first of the 24 solar terms. Standing means "start"; Spring represents warmth and growth. Twenty-four solar terms were originally formulated on the basis of "variable stars". When the bucket handle of the Big Dipper points to the shade, it is beginning of spring.

At present, solar terms are determined according to the longitude of the sun. When the sun reaches longitude 3 15, it will be the beginning of spring, and the festival will be held from February 3 to 5 of the Gregorian calendar every year. In the era of cadres and branches, silver moon is spring, beginning of spring is the beginning of a year, and beginning of spring is the beginning of everything, which means all self-renewal, which means the beginning of a new cycle. In the traditional concept, beginning of spring has auspicious meaning.

Beginning of spring marks the end of the winter when everything is hidden and begins to enter the warm and sunny spring. In nature, the most striking feature of beginning of spring is that everything is beginning to show signs of recovery.

Meteorological changes:

1 and early spring, westerly jet, the southern branch of East Asia, began to weaken, while the strength and position of westerly jet, the northern branch of East Asia, remained basically unchanged. Mongolian cold high and Aleutian low are still relatively strong, but in the interval affected by strong cold air, the frequency of southerly wind increases, accompanied by obvious warming process.

2. Since the solar terms in beginning of spring, the time series has entered the spring. In nature and people's minds, "spring" means warm weather and the revival of everything. Spring has begun. In nature, the most striking feature is that everything is beginning to show signs of recovery.

3. The dividing line between beginning of spring and China in winter and spring (when the average temperature reaches 65,438+00 degrees Celsius for five consecutive days, it is regarded as spring), from Guilin, Guangxi to Ganzhou, Jiangxi. In the area south of this line, beginning of spring sometimes smells like spring, but 93% of the land in China is still winter, while in Heilongjiang, it is often long summer and spring, and in Grain Rain.

4. The so-called beginning of spring is just a kind of "conception". In spring, the temperature began to rise, and sunshine and rainfall began to increase. But for most parts of the country, this is just a prelude to spring.

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