HSK V7-9
Correct

亡羊补牢

/ wáng yáng bǔ láo / 
Strokes

Definition

lit. to mend the pen after sheep are lost (idiom)/fig. to act belatedly/better late than never/to lock the stable door after the horse has bolted

Example

Definition

mend the fold after the sheep is lost

1
Wángyángbǔláo
亡羊补牢
  
,
yóu
犹
wèi
未
wéi
为
wǎn
晚
  
。

It is not too late to mend the fold even after the sheep has been lost. / It's never too late to mend. / Better late than never.