This sentence comes from a poem written by the anti-Jin hero Yue Fei, "Man Jiang Hong". This means that when you are young in life, don't put the good youth and other idleness, etc

This sentence comes from a poem written by the anti-jin hero Yue Fei, "Manjiang Hong". This means that when you are young, don't waste your youth, and wait until you are older to regret that you didn't seize the time to do meaningful things when you were young. "Don't wait for idleness, white teenager's head, empty and sad", which is the same as the meaning of "young and strong do not work hard, the old man is sad", reflecting the author's positive and enterprising spirit.