There is a boy herding sheep on the hillside not far from the village. Once, for fun, he suddenly shouted, "Help! Help! Wolf! " When the whole village heard the news and ran to help him, they realized that it was just a joke. I've played such a prank two or three times. Later, the wolf really came, and when the shepherd boy called for help again, no one paid any attention to him. So the wolf ate his sheep.

The meaning of this fable is clear: no one believes a liar, even if he is telling the truth. Therefore, people use "wolf coming" to summarize the basic plot and teaching significance of this fable, which is used as a metaphor for a false alarm; ; Give a warning where there is no danger. According to its metaphorical meaning, this idiom is equivalent to China's allusion in the Eastern Zhou Dynasty: beating the prince with a bonfire. In order to win the favor of concubines, Zhou Youwang took military affairs seriously, made a police officer to beat the governors, and let all the governors rush to send troops to Beijing, only to be laughed at. Later, the dog army invaded, and the king of the secluded place mobilized troops again, and no one came. As a result, Zhou Youwang was killed and destroyed. Although the plots of these two allusions are different, their meanings are completely inconsistent. They both say, "Once you tell a lie, no one will believe you."