According to legend, there was a poor scholar in the State of Chu in ancient times. When he read Huainanzi, he learned that the leaves hidden by mantis when catching cicadas could be used to hide. The next morning, he went to the forest. He looked around and finally found the invisible leaf. The poor scholar was ecstatic. He carefully picked off the leaves, but the poor scholar accidentally caught the leaves and fell to the ground. He mixed them with other leaves and couldn't find them.
So the poor scholar took all the leaves home. The poor scholar tried one by one and asked his wife at the same time; "See?"? The wife replied; "I can see it." So she kept asking again and again. Finally, the wife was tired and said, "I can't see it." The poor scholar was full of joy and went out to steal things with this leaf. In this way, the poor scholar was sent to the Yamen by the shop owner.
Later, the county magistrate asked the scholar why he stole things. The poor scholar told the story he had seen. At last, the poor student said, "A leaf blinds the eyes, but you can't see Mount Tai!" Children, this story tells us not to be greedy for money!