亡羊补牢

• Pinyin: wáng yáng bǔ láo
• Hanzi breakdown: 亡 = pictograph of a person hiding behind a wall — to flee, perish; 羊 = pictograph of a sheep; 补 = 衤(clothing) + 甫 (phonetic) — to patch; 牢 = 宀 (roof) + 牛 (ox) — a pen or enclosure

Meaning

To mend the fold after a sheep has gone missing; better late than never. A proverb meaning it's not too late to correct a mistake even after it has happened.

A classical four-character proverb (成语). Used to encourage someone to take corrective action after a problem has already occurred — acknowledging that while the initial loss cannot be undone, further damage can still be prevented. Carries a pragmatic, optimistic message.

Examples

1. 这次数据泄露虽然造成了损失，但亡羊补牢，及时升级安全系统仍然十分必要。 Although this data breach has caused losses, it's not too late to mend the fold — upgrading the security system immediately is still essential.
2. 他意识到错误之后立刻道歉，亡羊补牢，还是来得及的。 After realising his mistake he apologised at once — better late than never, it's still not too late.
3. 与其事后亡羊补牢，不如提前做好风险防范。 Rather than mending the fold after the sheep have gone, it's better to manage risks in advance.

Usage Guide

Context: proverb, advice, crisis management

Tone: pragmatic

Do Say

• 现在改变策略还不算晚，亡羊补牢，为时未晚。(It's not too late to change strategy now — better late than never.)
• 发现问题就要马上补救，亡羊补牢嘛。(As soon as you spot the problem, fix it right away — that's the spirit of mending the fold.)

Don't Say

• 将亡羊补牢理解为'一切都来不及了'的悲观表达 — the idiom is optimistic; it means corrective action is still worthwhile, not futile

Origin & History

From the ancient Chinese text 战国策 (Strategies of the Warring States). A man's sheep escaped through a hole in the fence; neighbours advised him to mend it. He did — and suffered no further loss. Moral: correcting a mistake after it happens is still worthwhile.

Cultural Context

Era: Warring States (475–221 BC)

Generation: All ages

Social background: Universal