This is a poem describing the elegance of the elderly. The whole poem is:
The sunset in the evening is good, but the old age is not bad.
Youth in the autumn wind array, only the bright shadow shows charm.
In the evening, Gui Xiang is not old, and the frost is yellow and sloppy.
Whoever wears red glasses has pity, and the wind still leads the way.
Expand knowledge:
It is not an idiom to describe a person or as before. China's idioms are stereotyped phrases or short sentences that people have used for a long time. They are concise in form and incisive in meaning, and generally have a source, which is what we call idiom allusions. And elegant demeanor still obviously does not belong to this category.