春秋时期，有一个名叫王安之的人，他养了很多羊。王安之很喜欢他的羊群，每天都会去看它们。
During the Spring and Autumn Period, there was a man named Wang Anzhi who raised many sheep. Wang Anzhi likes his sheep very much and goes to see them every day.
一天晚上，王安之照常去检查他的羊群，但他发现栅栏破了一个洞，不过，王安之并没有把这件事放在心上，他觉得只是破了一个洞，没什么好担心的。然后，他就回去睡觉了。他很快就睡着了，还做了一个美美的梦。在睡梦中，他发现自己的羊群都长得更加肥壮了。他把羊拿去集市上卖了一个好价钱，并拿着这些钱过上了富有的生活，在做美梦的同时，肚子咕咕叫的饿狼也开始行动了。狼把羊从洞口一只一只地叼出来吃掉，直到它吃饱为止。而等它吃饱的时候，栏里就只剩3只羊了。饱肚的狼满意地摇了摇尾巴，走了。可是，正在享受幸福生活的王安之并没有感觉到羊群们的死讯。来源 wwW.ZUowEnbA.nET
One night, Wang Anzhi went to inspect his flock as usual, but he found a hole in the fence. However, Wang Anzhi did not take this matter to heart. He felt that it was just a hole and there was nothing to worry about. Then, he went back to sleep. He quickly fell asleep and even had a beautiful dream. In his sleep, he found that his flock of sheep had grown even fatter. He took the sheep to the market and sold them for a good price, and used the money to live a wealthy life. While dreaming, the hungry wolf with a growling belly also began to act. The wolf pulled the sheep out of the cave and ate them one by one until they were full. And when it's full, there will only be three sheep left in the pen. The satisfied wolf wagged its tail and left. However, Wang Anzhi, who was enjoying a happy life, did not feel the news of the sheep's death.
第二天是上，王安之又来看他的羊。当看见数不胜数的羊群只寥寥无几的时候，脸上的笑容便瞬间凝结了。他伤心极了，伤心地都快要哭出来了。路过的邻居看见了，便问他：“你怎么了？”“我的好多只羊都不见了。”王安之哽咽地说。邻居看了看栅栏上的洞，会心一笑，说“如果你一开始发现栅栏上的洞的时候就及时修好它，你的羊就不会不见了。”王安之抹了抹眼泪，谢了邻居，马上就拿起工具把栅栏补好，然后自言自语地说：“早知道就早点把栅栏修好，不然，我的损失也不会这么惨重……”
The next day, Wang Anzhi came to see his sheep again. When I saw countless sheep with only a few, the smile on my face instantly froze. He was extremely sad, so sad that he was almost crying. The neighbor who passed by saw it and asked him:; Are you okay? ” “ Many of my sheep are missing. ” Wang Anzhi choked up and said. The neighbor looked at the hole in the fence and smiled knowingly, saying; If you fix the hole in the fence in a timely manner when you first discover it, your sheep will not disappear. ” Wang Anzhi wiped away his tears, thanked his neighbor, immediately picked up tools to fix the fence, and then muttered to himself; If I had known, I would have fixed the fence earlier, otherwise my losses wouldn't have been so heavy; … ”
后来，就有了“亡羊补牢”一词，同时也让我们懂得了防患于未然比事发后补救更有用。
Later on, there was; Mending the lost sheep; The term also teaches us that preventing problems before they occur is more effective than remedying them after they happen.