The flowers are blooming, and the next sentence is

Beautiful shadows pose in a thousand poses.

The next sentence of "Flowers are Blooming" is: "The shadow is dazzling." "The flowers are blooming brightly, and the pretty shadows pose in various poses" means that the flowers are blooming just right, and the beautiful shadows are constantly changing various poses. The whole poem depicts a beautiful spring scene, in which "the flowers are blooming brightly" describes that the flowers have just bloomed, and "the beautiful shadows of the flowers are constantly changing various postures, showing the vitality and vigor of spring.