2. Industry is diligent, play is useless, and actions are destroyed by thinking.
Why do you have to go to bed in the middle of the night and get up at five? The most useless thing is to be frozen for ten days a day.
4. The deceased is like a husband, not giving up day and night (Confucius)
Between heaven and earth, if it is a blink of an eye, it is sudden. (Zhuangzi)
If you don't come back in your prime, it's hard to get up in the morning. It's time for people to encourage themselves when they reach middle age. Time goes by and waits for no one. (Tao Yuanming)
7. Young people will be sad if they don't work hard. ("Long Songs")
8. This is the night for men to study. Teenagers only know how to play, but don't know how to study hard. When they are old, they regret why they didn't know how to study hard when they were young. (Yan Zhenqing)
9. Young people learn easily, but they are never old, and an inch of time is not light. (Zhu)