What does the poem "beginning of spring read the outline of" The Fire of Three C's "mean?

Beginning of spring studied three C exercises, and then spent a day on the outline of King Jiamu.

-In early spring, the sun is shining and the trees are lush.

Beginning of spring is the first of the 24 solar terms in the lunar calendar. Beginning of spring is divided from astronomy, that is, when the sun reaches longitude 3 15. Beginning of spring is one of the important traditional festivals in China. "Li" means "start". Since the Qin Dynasty, China has always regarded beginning of spring as the beginning of the Meng Chun season. The so-called "a year's plan lies in spring", spring is full of flowers, birds and flowers are fragrant; Spring is growth, cultivation and sowing.