liú​shuǐ​bù​fǔ​hù​shū​bù​dù

constant activity prevents decay

流水不腐,户枢不蠹 流水不腐,戶樞不蠹 liú​shuǐ​bù​fǔ​hù​shū​bù​dù
constant activity prevents decay
literally 'flowing water does not rot, and a door hinge is never eaten by worms'; used as a metaphor for how things that stay active do not deteriorate and can maintain their vitality
constant motion prevents decay
running water does not go stale and a door hinge is never eaten by worms; implies that constant activity and movement prevent things from deteriorating

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Referenced by