What kind of scene is Li Bai's Under the Wushan Mountain? What does this poem mainly express? What kind of feelings did the poet express?

Last night in Wushan, the whole Ape Mountain, Lian Meng seemed to hear their lament.

Peach blossoms float in the green water in March, and I dare to care at this time.

The wind blew the rain to the south and soaked the clothes of the king of Chu.

On this high hill, I miss Song Yu. Why did I write such a beautiful article for the king of Chu? Seeing this monument made me cry.

On the surface, it describes the early spring scene of peach blossoms floating under Wushan Mountain, and the breeze carrying drizzle. It uses lyrical expressions and rhetorical devices to express feelings by taking advantage of the scenery, and compares the author's frustration in official career with Song Yu's generosity, which makes the great poet's sense of lack of talent more rich and desolate.