1. Learning requires hard work, perseverance, and accumulation over time. ——Wu Yuzhang

2. The most difficult thing to do is to persevere in what is easy to do. ——Anonymous

3. The most terrifying enemy is the lack of strong belief. ——Romain Rolland

4. As long as a person pursues strongly and persistently, he can achieve his goal. ——Stendhal

5. As long as you work hard enough, an iron rod can be ground into a needle.

——Han proverb