户枢不蠹

Traditional form:

戶樞不蠹

Pinyin (reading):

hùshūbùdù

Definitions:

• lit. a door hinge never becomes worm-eaten
• constant activity prevents decay (idiom)

Characters:

• 户 - door; family
• 枢 - door hinge; pivot; center of power
• 不 - no, not, un-; negative prefix
• 蠹 - moth, bookworm; moth-eaten, worm-eaten

Traditional characters:

• 戶 - door; family
• 樞 - door hinge; pivot; center of power
• 不 - no, not, un-; negative prefix
• 蠹 - moth, bookworm; moth-eaten, worm-eaten