Who will say it when you are young and white-haired?

What you want to ask is who will be old when you are young and white-haired. What do you mean? It means being helpless and sighing about time, reminding people to cherish time, seize opportunities and not waste time. This sentence comes from the poem "Delighting in Rain on a Spring Night" by Du Fu, a poet in the Tang Dynasty. The image of the moment of "youth and white hair" expresses the poet's feelings and helplessness over the passage of time and reflects the brevity and impermanence of life. "Who will you talk to when you are old?" It is a kind of helplessness and sigh for time, reminding people to cherish time, seize opportunities and not waste time. Life is long, time flies and the road ahead is still long. We should cherish time, do what we want and live a wonderful life.