It's the vernal equinox, the grass is falling, the birds are singing and the flowers are fragrant, I wish you a good song.

Solar terms The vernal equinox, vernal equinox and solar terms of the Song Dynasty have arrived, flowers and plants are falling, birds are flying, and greetings are good. This is the song of the vernal equinox in the 24 solar terms Song Dynasty. The vernal equinox is one of the 24 solar terms and the fourth solar term in spring. The fingers do not match, the longitude of the sun reaches 0, and the festival is held on March 19-22 of the Gregorian calendar every year.