Yes.

"As long as you work hard enough, an iron pestle can be ground into a needle" is a famous saying, derived from a Chinese proverb, which expresses that as long as you have enough perseverance and patience, you can overcome difficulties and achieve any goal.

This famous saying is widely quoted and passed down in Chinese culture and is often used in educational, motivational and inspirational situations to encourage people not to give up and pursue their goals with tenacious perseverance.