tiě​chǔ​chéng​zhēn

to grind an iron bar into a needle

Senses

铁杵成针/ 鐵杵成針 tiě​chǔ​chéng​zhēn to grind an iron bar into a needle

to grind an iron bar down to a needle; used to describe how constant perseverance and hard work will lead to success in even the most difficult tasks

References

synonym 铁杵成针/鐵杵成針 磨杵成针/磨杵成針