1. If young people don’t work hard, old people will be sad.

2. Black-haired people don’t know how to study diligently early, and white-haired people regret studying late.

3. Jade cannot be used without polishing, and people cannot understand it without learning.

4. The karma is better than diligence, and the waste is playfulness. The success is due to thinking, and the success is due to thinking, and the failure is due to following. The karma is better than diligence, and the waste is playfulness. 5. Don’t wait for your young head to turn gray and feel empty and sad

6. Tomorrow comes tomorrow, there are so many tomorrows, waiting for tomorrow day by day, everything will be wasted.