The vernal equinox is one of the twenty-four solar terms, which means that day and night are equally divided, ranking fourth in the twenty-four solar terms. At this time, the sun shines directly on the equator.

At the vernal equinox, the climate is getting warmer. On this day, the sun can shine directly at the equator, and day and night are almost equal. Then the direct position of the sun gradually moved northward, and began to show long days and short nights. This is a very important solar term, and it is also very important in astronomy. The climate has changed obviously. Our weather is getting warmer and warmer, and people's activities are getting more and more.

Beginning of spring is a time point. According to the law of the earth's rotation and revolution, it is the intersection of winter and spring, and beginning of spring ranks first among the 24 solar terms, which is the beginning of a year.

Standing is the meaning of beginning; Spring means spring. After beginning of spring, spring came. Everything is revived, the grass is growing and the warbler is flying. It is also a time when the temperature is warming up and the vitality is budding. Beginning of spring and other solar terms are based on the lunar calendar, which has guiding significance for agricultural production.