1. The lights are on at five o'clock in the middle of the night. It is when a man is studying, he doesn't know that he is diligent and early, and his white hair regrets that he is late. -Yan Zhenqing

2. An inch of time is worth an inch of gold, but an inch of gold cannot buy an inch of time.

3. It is difficult for a teenager to learn and grow old, and an inch of time is not light. -Zhu Xi

4. My life is limited, but so is my knowledge. -Zhuangzi

5. If a young man doesn't work hard, the old man will be sad. -"Long Songs"

6. There are three steps of time: the future comes late, the present flies like an arrow, and the past stands still forever. -Schiller

7. Who is the most stingy with time, the more generous time is to him.

if you want time to live up to you, first of all, you should live up to time. He who gives up time, time also gives up on him.

8. There is a difficulty in life, and that is how to make an inch of time an inch of life.

9. Time is life, time is speed, and time is strength. —— Guo Moruo