explain
Sang Yu: Sang Yu. When the sun goes down, it will be too late for Sang Yu.
Don't say that it's nearly evening when the sun arrives in Sang Yu, and its afterglow can still shine all over the sky.
Metaphor is old and powerful, old and active.
originate from
"Appreciating Lotte and Singing Old" [Yuxi, Liu Tang]
People who don't care about the old have compassion when they are old.
The body is thin and the frequency is reduced, and the hair is thin and the crown is self-biased.
Waste books cherish eyes, and moxibustion is mostly for years.
Classics are still familiar things, and people are like reading Sichuan.
It's lucky to think about it carefully, but it will succeed next time.
Don't say Sang Yu is late, because it is still full of clouds.
Appreciating Lotte and Singing the Old is a poem by Liu Yuxi, a writer in the Tang Dynasty.
This poem illustrates the author's point of view. The author thinks that although some people are old and thin, their eyesight is weak and they are ill, they also have the advantages of being experienced, knowing how to cherish time and being self-motivated. If we think about this point seriously and comprehensively, we can establish a correct view of the elderly, get rid of the emotion of sighing for the elderly and make a difference. The whole poem expresses Liu Yuxi's sober and optimistic understanding of life and death, which shows that he can treat life positively with a materialistic attitude under any circumstances. The phrase "Sang Yu is late, but it is still full of sunshine" is deeply appreciated by people and has become a famous sentence that has been passed down through the ages.