It came from a fable in Han Feizi Yu Lao. The story was about a sheep that was burned to death in a big fire. Its owner was so worried that he decided to cut off the neck of the sheep to prevent other sheep from being hurt. However, when the owner was worried that the sheep's neck would not be able to support the cut, he pulled the sheep's neck back and finally had to undergo surgery again, which eventually led to more losses. Making up for the lost sheep meant that when they encountered a problem, they had to take timely measures to prevent the problem from further expanding and worsening. In the story, the master initially took the wrong action, so he needed to correct it in time to take the right action to avoid greater losses. This story also tells us that when dealing with problems, we must calmly analyze and discover the problem in time and take effective measures to avoid losses.