A mouse ran from the face of a lion. The lion angrily jumped up, caught the mouse and wanted to kill it. The mouse cried: "as long as you are willing to spare my life, I will repay your kindness." The lion laughed and let him go. Later, the lion was caught by some hunters, and fell to the ground with a rope tied. The mouse heard the lion's sound, released him, and said: "You laughed at me at that time, but did not expect me to have the opportunity to repay. But what you know now, even the little mouse, also can help a lion."