1. Life is about hard work, nothing will be gained without asking for anything. ——Zhang Heng

2. If you work hard for a day, you can get a good night's sleep; if you work hard for a lifetime, you can get a happy sleep. ——Leonardo Da Vinci (Italy)

3. I have nothing else to offer, only tears and blood and sweat. ——Churchill

4. We should dedicate ourselves at any time in different positions. ——Heise

5. Even though there are ninety-nine difficulties, it is not difficult as long as you have a strong will. ——Yang Gensi

6. Difficulties can only scare cowards and lazy people, but victory always belongs to those who dare to climb the peak of science. ——Mao Yisheng

7. Clinging to the green hills and not letting go, the roots are still in the broken rocks; they are still strong despite being struck by the east, west, north and south winds. ——Zheng Banqiao

8. If you persevere, the rotten wood will not break; if you persevere, the metal and stone can be carved. ——Xun Kuang

9. Tenacious perseverance can conquer any mountain in the world. ——Dickens

10. Where are the thorns that can never be cut off? Is there any jackal that cannot be killed? Is there any mountain that cannot be overturned? You just need to struggle, struggle bravely; continue, continue forever, and victory will be yours. ——Deng Zhongxia

11. What the world lacks is perseverance, not strength. ——Hugo

12. Boldness is the price paid for progress. ——Hugo

13. There are many thorns on the road of art. This is also a good thing, and ordinary people look forward to it. The only exception to timidity is the strong-willed. - Hugo

14. I must admit that luck likes to take care of brave people. - Darwin

15. Patience and persistence Although it is painful, it will gradually bring benefits to you.

——Ovid, ancient Roman poet