What are the three stages of beginning of spring?

In ancient China, beginning of spring was divided into three periods, that is, when the east wind thawed, when the stinger began to vibrate, and when the fish was frozen. The first corresponding flower letter is Spring Festival, the second is cherry blossom, and the third is Wang Chun. The so-called "east wind thawing" means that the east wind warms and the earth begins to thaw.

Beginning of spring is the first of the twenty-four solar terms, and it was included in the first month solar terms in the official yearbook of Ming and Qing Dynasties. The arrival time is on February 3-5 of the Gregorian calendar every year (around the first day of the first lunar month), when the sun reaches 3 15. Beginning of spring is one of the important traditional festivals of the Han nationality. "Li" means "start". Since the Qin Dynasty, China has always regarded beginning of spring as the beginning of spring. Beginning of spring is divided from astronomy, with warm spring and fragrant flowers in bloom. Spring is growth, cultivation and sowing. The period from the beginning of the Spring Festival to the long summer is called spring.