What does the vernal equinox mean?

The vernal equinox is one of the 24 solar terms and the fourth solar term in spring. The longitude of the sun reaches 0, and the festival is held on March 19-22 of the Gregorian calendar every year. The vernal equinox is of great significance in astronomy. On the vernal equinox, the northern and southern hemispheres are divided equally day and night. After that, the direct position of the sun continued to move from the equator to the northern hemisphere, and the days in the northern hemisphere began to be longer than the nights.

After the vernal equinox, the climate is mild, rainy and sunny. During the vernal equinox, there are some folk customs in China, such as flying kites, eating spring vegetables and laying eggs.