2. See the economy of Si Qi.
3. Youth is in full bloom.
4. Don't wait.
5. Pengcheng Wan Li.
6. Make great efforts.
7. Study hard and think hard.
8. Self-improvement.
9. Be virtuous.
10, thrive and strive for self-improvement in the future life.
1 1, young people don't work hard, and old people are sad.
12, study hard and make progress every day.
13, since ancient times, heroes have emerged as teenagers, and each generation is stronger than the next.