Help me give my poetry collection a classical and pleasant name.

If you want to bring your name, you can call it Sambucus Collection:

In the early spring sunshine, the grass grows and the warblers fly, and the blue sky and clear water are full of vitality, giving people hope and infinite comfort. And your poems are like grass, dotted with this bustling and noisy world, leaving a touch of emotion in the hurried footsteps of the world.

Without the word "mountain", it can be called "flying flowers in dreams":

Wake up for a thousand years, dream for a thousand years, wake up with a dream, wake up with a dream, and turn around for a thousand times. Only that flying tree is accompanied by a lonely cycle. . .