What are the meanings of "constellation" and "flower" in the first sentence of Love China?

Constellations should be about galaxies in the sky. Galaxies are always together. Flowers are metaphors of beautiful, bright and prosperous things. Fifty-six refers to fifty-six ethnic groups, and galaxies and flowers should be metaphors of unity and beauty of fifty-six ethnic groups.

(Personally, I think &; Just a personal thought. . . )