春秋时代，有一个国家叫郑国。
有一天，郑国想要发兵侵略宋国。
这可不得了，因为这个决定，导致了很多其他的国家联合起来，包括晋国、齐国和宋国等等。
这些国家一起出兵攻打郑国。
郑国的兵力太弱了，根本挡不住这么多国家的围攻。
于是，郑国就向实力最强的晋国求和。
晋国答应了郑国的要求，其他国家看到晋国都退兵了，也就跟着退兵了。
为了感谢晋国的帮助，郑国准备了很多礼物送给晋国。
他们准备了乐师、歌女、各种乐器，还有一百辆装备完善的兵车。
晋悼公收到了礼物后非常高兴。
他把一半的乐器和歌女赏赐给了他的功臣魏绛。
但是，魏绛没有接受这份礼物。
他说：“晋国之所以这么强大，是因为大王您的贤能和所有大臣们的努力。我并没有什么功劳。我只是希望您在享受安逸的时候，不要忘记国家大事。”
《尚书》上有一句话说：“处在安逸环境的时候，就要想到随时可能会出现危险。如此才能及时有所防备，有防备就不怕灾难发生。”
魏绛引用这句话来规劝晋悼公。
晋悼公听了魏绛的话，说：“我一定会接受您的教训。但如果没有您，我也不会有今天的成就。对臣子的奖赏是国家的常规，不能废除，请您收下吧。”
最后，魏绛接受了晋悼公的赏赐。
后来，人们就把《尚书》中的“居安思危”引申为成语，用来提醒我们在安逸快乐的环境中，也要想到随时可能出现的危险。
In the Spring and Autumn Period, there was a country called Zheng.
One day, Zheng decided to invade Song.
This was a big deal because this decision caused many other countries to join forces, including Jin, Qi, and Song, etc.
These countries jointly attacked Zheng.
Zheng's military power was too weak to withstand the siege of so many countries.
So, Zheng sought peace with Jin, the strongest country.
Jin agreed to Zheng's request, and seeing that Jin had withdrawn its troops, the other countries followed suit.
To thank Jin for their help, Zheng prepared many gifts for them.
They prepared musicians, singers, various musical instruments, and 100 fully equipped war chariots.
King Chong of Jin was very happy when he received the gifts.
He bestowed half of the musical instruments and singers on his meritorious official, Wei Jiang.
But Wei Jiang did not accept the gift.
He said, "Jin is powerful because of Your Majesty's wisdom and the efforts of all the ministers. I have no merit. I just hope that you will not forget national affairs while enjoying your comfort."
There is a saying in The Book of History: 'When one is in a comfortable environment, one should always be mindful of potential dangers, so as to be prepared in time, and with preparation, one has nothing to fear from disasters.'
Wei Jiang quoted this passage to advise King Chong of Jin.
King Chong of Jin listened to Wei Jiang's words and said, "I will certainly take your lesson to heart. But without you, I would not have achieved what I have today. Rewarding ministers is a convention of the state and cannot be abolished, please accept it."
Finally, Wei Jiang accepted King Chong of Jin's reward.
Later, people extended the phrase 'thinking of danger in times of safety' from The Book of History into an idiom, reminding us to be mindful of potential dangers even in comfortable and joyful environments.
