a strong foundation withstands any storm
Proverb meaning that something with a solid base or long history will not easily fail or run dry. Literally 'an old river never runs out of water'.
The taste of the long-established shop, like an old river that never runs dry, is still loved by many today.
A Japanese proverb; the exact origin is uncertain, but it draws on the image of an old river that continues to flow, symbolizing enduring strength.