有备无患 Preparedness prevents problems
Explanation
指事先做好充分的准备，就能避免祸患。强调未雨绸缪的重要性。
It means that if you make full preparations in advance, you can avoid disasters. It emphasizes the importance of being prepared for unforeseen circumstances.
Origin Story
春秋时期，晋国多次侵略郑国，郑国不堪其扰，向晋国求和，并进献大量财宝美女。晋悼公准备享乐一番，但大臣魏绛劝谏说："我们应该居安思危，有备无患，不能只顾眼前享乐而忽略长远安全。"晋悼公听从了魏绛的建议，加强了国防建设，最终使晋国免受其他国家攻击。魏绛的远见卓识使晋国避免了潜在的灾难，体现了有备无患的重要性。
During the Spring and Autumn Period, the state of Jin repeatedly invaded the state of Zheng. Unable to bear the repeated attacks, Zheng sued for peace with Jin and offered a large amount of treasures and beautiful women as gifts. Duke Dao of Jin was preparing to enjoy himself, but his minister, Wei Jiang, advised him, "We should be prepared for danger in times of peace and avoid future troubles. We should not only focus on the immediate enjoyment but also think about long-term security." Duke Dao of Jin followed Wei Jiang’s advice, strengthened national defense, and ultimately saved Jin from attacks by other states. Wei Jiang's foresight saved Jin from potential disasters, highlighting the importance of being prepared.
Usage
用于劝诫人要未雨绸缪，防患于未然。
Used to warn people to be prepared for future difficulties and to prevent problems.
Examples
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居安思危，有备无患。
ju an si wei, you bei wu huan.
Be prepared, lest the disaster comes.
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我们应该未雨绸缪，有备无患。
women yinggai wei yu chou mou, you bei wu huan
We should prepare for the worst and hope for the best.