The king of Wu wanted to cut down the thorns and told him, "Those who dare to remonstrate will die!" At this time, there was a young man at the bottom, who knew that people were talking lightly and it was useless to persuade him. He would die suddenly. It was only the third time that I swam in the backyard with a slingshot and exposed my clothes. The king of Wu asked him and said to him, "There are trees in the back garden, and cicadas are drinking dew on them. I wonder if mantis will catch them in the back! And the mantis tried to pounce on it, and I knew that the yellowbird was creeping beside it! The yellowbird stretches its neck only to peck mantis, I don't know the slingshot under the tree! They all want to get the benefits of the past and ignore the troubles of the future! " After hearing this, the prince of Wu felt very reasonable and refused to send troops.