The idiom "I bought bamboo slips and returned pearls" comes from "Han Feizi, and the foreign reserve says upper left", which means that the wooden box that bought pearls was returned; Metaphor has no vision and improper choice. This story tells us a truth: don't be confused by superficial things, but recognize the true value of things.

During the Spring and Autumn Period and the Warring States Period, there was a jeweler in the State of Chu. He has prepared some jewels and intends to take them to the state of Zheng to sell. In order to get a good price, he carved a box out of precious wood and decorated it with jewels and jewels. He carefully put the jewels in a beautiful box and took them to Zheng. After arriving in Zheng State, he exhibited his jewelry in a bustling city, and there were many onlookers. Zheng, a local, liked the box very much. He bought it at a high price, but he returned the jewels to the jeweler and left happily. This is the story of buying bamboo slips and returning pearls.