河水不犯井水 [hé shuǐ bù fàn jǐng shuǐ]
1 比喻互不干犯。
1 河水和井水各不相干。比喻界限分明,互不干犯。也作「井水不犯河水」。
英语 lit. river water does not interfere with well water (idiom); Do not interfere with one another., Mind your own business.
河水不犯井水
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