English translation: Water hitting day by day wears the hardest rock away.
This proverb means that if you persist with something that seems hard, eventually you will succeed. The values expressed are those of patience, perseverance, hard work, which are international proverb themes. Below are more proverbs with the same or similar theme:
Mongolia: A man falls seven times and gets up eight times.
China: A jade stone is useless before it's carved.
Russia: Without effort it's not easy even to pull a fish from a pond.
Dominican Republic: Slowly and calmly a donkey climbs a palm tree.
Vietnam: Grind iron with patience; one day you'll have a needle.
China: A thousand meter building is built from the ground.
Thank you to my student Milena for sharing this proverb, and to my colleague Marcela for helping with the editing process.