户枢不蠹 Traditional 戶樞不蠹 hù shū bù dù 🔊 lit. a door hinge never becomes worm-eaten + Keep this word Meanings hù shū bù dù 戶樞不蠹 lit. a door hinge never becomes worm-eatenconstant activity prevents decay (idiom) Its characters 户hùa householdHSK 6枢shūhinge; pivot (usu. fig.)不bùnot; noHSK 1蠹dùinsect that eats into books, clothing etc