What does the vernal equinox mean?

Sting is the third of the 24 solar terms, which falls on March 5, 6 or 7 in the solar calendar. The reason why this solar term is named "smelly" is because the ancients believed that at this time, spring thunder began to sound, which alarmed the insects that had been dormant for a winter and they all ran out. In fact, it is because after this solar term, the weather is getting warmer, and even if there is no thunder, bugs will come out to move. In the twenty-four solar terms, the fright reflects the phenomenon that natural creatures germinate and grow under the influence of rhythm changes, and it is the reflection of ancient farming culture on natural festivals.

The vernal equinox is the fourth of the 24 solar terms, which is March 20th or 2 1 in the Gregorian calendar. At the vernal equinox, the direct point of the sun is on the equator, and then the direct point of the sun continues to move northward, so the vernal equinox is also called the "ascending equinox". In ancient times, it was also called "Japan-China", "Day and Night" and "Mid-spring Moon". The vernal equinox is an important solar term, which not only has astronomical significance: the northern and southern hemispheres are equally divided day and night, but also has obvious characteristics in temperature.