【亡羊补牢】〖wáng yáng b láo〗[mend the fold after the sheep have been stolen; lock the stable door after the horse has been stolen; mend the fold after a sheep is lost; shut the stable door after the steed has been stolen]

亡猿祸木毁自穴，

羊入虎群受剥削。

补敝起废回头走，

牢骚满腹荡漂泊。

羊逃跑了再去修补羊圈，还不算晚。比喻出了问题以后想办法补救，可以防止继续受损失。Sheep ran away go again repair sheepfold, still not really late. Metaphor When something goes wrong,  find way to remedy to prevent further losses. 同：知错就改。反：时不我待、知错不改。 战国时楚襄王荒淫无度，执迷不悟，将劝谏的大臣庄辛赶出楚国。秦国趁机征伐，很快占领楚都郢。楚襄王后悔不已，派人到赵国请回庄辛，庄辛说：“见兔而顾犬，未为晚也；亡羊则补牢，未为迟也。”鼓励楚襄王励精图治、重整旗鼓。