What is the theme of the Tang poem "Golden Valley Garden"?

Main idea:

This is an impromptu poem. The poet passed by the ruins of Jinguyuan, a rich man in the Western Jin Dynasty, hanging his ancient feelings. The previous sentence says that the prosperity of Jinguyuan in the past is gone forever; The second sentence says that although the personnel are absent, the scenery is different; Three or four sentences are emotional, and listening to birds sounds like sadness; Seeing the falling flowers on the ground, I thought of Shi Chong's concubine, Lvzhu, who committed suicide by jumping off a building. Every sentence is about scenery, and every level must be in-depth. There are people in the scene and there are feelings in the scene. Writing about scenery is meaningful, lyrical and sad.

Jinguyuan is a seven-character quatrain written by Du Mu, a poet in the Tang Dynasty.

? Gardens in the Golden Valley

The bustling past is gone with the fragrance of dust; The water is ruthless, and weeds are green every year until spring.

The birds groaned, and night came with the sound of the east wind; Falling flowers are as beautiful as green beads falling from upstairs.

Translation:

? The prosperous past has been exhausted with the incense dust, leaving no trace. The spring grass is green every year, and the running water flows away mercilessly and quietly. At dusk, birds crow in the east wind, and falling flowers are like people falling from a building.