What does the vernal equinox mean?

Introduction of vernal equinox: one of the 24 solar terms

The vernal equinox, autumnal equinox, winter solstice and summer solstice, also known as "two points to two days", are the four most important symbolic solar terms among the 24 solar terms. The twenty-four solar terms say, "Mid-February. The division is half, and this is half of ninety days, so it is called division. " At the vernal equinox, the sun reaches the meridian zero, which happens to be in the middle of February. Because the vernal equinox is divided into two halves, it is called the vernal equinox.

Moral of the vernal equinox: Day and night are almost equal.

The vernal equinox is one of the solar terms reflecting the changes of the four seasons and the fourth of the 24 solar terms. In ancient China, beginning of spring, Changxia, beginning of autumn and beginning of winter were used to indicate the beginning of the four seasons. The vernal equinox, summer solstice, autumn equinox and winter solstice are in the middle of each season. On the vernal equinox, the sun shines directly on the equator, and the time between day and night is equal all over the earth. Therefore, the ancient vernal equinox and autumnal equinox are also called "equinox", and there is a folk proverb that "vernal equinox and autumnal equinox are equally divided day and night".