吃水不忘掘井人 chīshuǐ bù wàng jué jǐng rén

chīshuǐ bù wàng jué jǐng rén phrase Drinking the water of a well, one should never forget who dug it.
Domain: Proverb 谚语
Notes: (CC-CEDICT '吃水不忘掘井人')