Liúshuǐ bù fǔ; hù shū bù lóu /dù.

流水不腐, 戶樞不螻/蠹。

Lit Running water is never stale, [and] door hinges never get worm-eaten.

Fig Things which are in constant use do not get rusty. If one keeps active, one's mind and body will not become infirm.

Note [Cf. Lǚ Shì Chūnqiū: Jìng Shù; note: liúshuǐ bù fǔ and húshū-bùdù have become set phrases; see also tiě bù mó, shēngxiù below.]

Topics ACTIVITY HEALTH húshū-bùdù INFIRMITY Jìng Shù Lǚ Shì Chūnqiū MINDS USE