Does the vernal equinox mean that spring is coming?

The vernal equinox means that spring has come, and the vernal equinox means that spring has passed halfway.

The 24 solar terms reflect the changes of the four seasons. 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.

At the vernal equinox, the bucket handle of the Big Dipper points due east, and the sun reaches 0 degrees of the yellow meridian. The festival will be held on March 20th or March 2nd1day of the Gregorian calendar. The vernal equinox solar term usually refers to a certain period of time, that is, the sun is located between 0 degrees and 15 degrees of the yellow meridian, from March 20 to April 5 of the Gregorian calendar.

In ancient times, the vernal equinox was also called "Japan-China", "Day and Night Equinox" and "Midspring Moon". Because the sun shines directly on the equator on this day, the days in the northern hemisphere and the southern hemisphere are as long as the nights. After the vernal equinox, the direct sunlight position gradually moved northward. ?

In the traditional method of dividing the four seasons in China, "Li Si" in the 24 solar terms is regarded as the starting point of the four seasons, and "Colorful" and "Erzhi" are regarded as the midpoint. The division of the four seasons in the west takes "one divides into two" as the starting point of the four seasons, such as spring as the starting point and summer solstice as the end point.

Western countries are located at higher latitudes, far from the intersection of Huangchi. Taking "bisection" as the starting point of the four seasons can better reflect the local climate than "four divisions". In the west, the four seasons divided by "dichotomy" are one and a half months later than China's traditional "quartering".