What figures of speech are used in the metaphor sentence of Winter in Jinan to describe something vividly written?

The mountain completely surrounds Jinan, except for the lack of some food in the north. This circle of hills is particularly lovely in winter, as if Jinan were put in a small cradle. They whispered, "Don't worry, it will be warm here." The dwarf pine on the mountain is getting darker and darker, and there is a bun of white flowers on the top of the tree, like a Japanese nurse.