In ancient China, there was a man called Zhou Yong. Before his father died, he left Zhou Yong a great number of gold ingots (元宝). Zhou hid them in a safe place in his home. One day, Zhou decided to travel far away. He was afraid that someone would steal the gold ingots. But they were too heavy for him to bring along with him. So he put all the ingots into a jar (坛子) and gave it to his friend Wang Wu, telling Wang that the jar was full of fresh red dates (红枣).
A year later, one day before Zhou came back, Wang's wife wondered what was in the jar. So she secretly opened it. She was shocked when she saw so many ingots inside. She told Wang about it and they took the ingots out and filled the jar with fresh red dates.
When Wang returned the jar to Zhou, Zhou found the ingots were missing. They argued about it for a while, then they went to see the county magistrate (县官).
When the magistrate asked Wang what had happened, he answered, "Zhou said that there were fresh red dates in it when he gave me the jar a year ago."
The magistrate examined the jar and the fresh red dates in it carefully. Then he said: "Bring the ingots back, Wang Wu!"
Wang still denied (否认)having taken them. But after the magistrate explained what he knew, Wang finally admitted (承认)that he had taken the ingots.