2. The main idea is embodied in the last two sentences, but the poet's thought is not a simple expression, but a concrete image with aesthetic feeling extracted from the real world and taught in aesthetics.
3. Original text
Changgexing
Author: Han Lefu
In the green garden, sunflowers are exposed to the sun.
Spring fills the earth with hope, and everything presents a scene of prosperity.
I'm often afraid that autumn festivals will come, and the leaves of yellow flowers will wither.
The river runs to the sea, and when will it return to the west?
A lazy youth, a lousy age.