Which day is the first day of spring, beginning of spring or the vernal equinox?

Beginning of spring is the first day of spring;

Standing means "start"; Spring represents warmth and growth. Twenty-four solar terms were originally formulated according to "variable stars". When the bucket handle of the Big Dipper points to the cloudy, it is beginning of spring. The current 24 solar terms are divided according to the "longitude of the sun". When the sun reaches longitude 3 15, it will be beginning of spring. In the era of cadres and branches, beginning of spring is the first year, beginning of spring is the beginning of everything, and it is the meaning of all self-renewal, which means that a new cycle has begun.

Extended data:

Beginning of spring, like Changsha, beginning of autumn and beginning of winter, reflects the seasonal changes. Beginning of spring marks the end of the winter when everything is closed and begins to enter the warm and sunny spring. Due to the vast territory and great climate difference in China, the specific climate significance of "beginning of spring" does not apply to all parts of the country, but only has reference significance to many regions.

Its corresponding area is the dividing line between Lingnan and winter and spring, at the intersection of yellow and red. It is located in the first line from Guilin, Guangxi to Ganzhou, Jiangxi. When the sun reaches 3 15, the area south of this line will have the breath of spring. However, 93% of China's land area is still in winter, and spring often comes to Heilongjiang in Grain Rain or in the long summer.

As a seasonal solar term, beginning of spring marks the beginning of spring and represents warmth and growth. "Li Si" marks the rotation of four seasons, and reflects the laws of phenology, climate and many other changes, such as spring, summer, autumn and winter, winter storage, sunshine, rainfall and temperature. Beginning of spring symbolizes the rising of yang, the revival of everything and the beginning of a new year.