Everyone should be familiar with the story of "returning pearls with gifts" contained in Han Feizi. This story is about a Chu man selling pearls in Zheng State. In order to attract customers, he made a box out of Mulan and smoked it with cinnamon peppers. The outside of the box is decorated with colorful decorations. Zheng bought a pearl box and gave it back to the Chu people. Another allusion of "The Pearl of Canghai" is that Di of the Tang Dynasty passed the Ming Classics (one of the subjects in the imperial examination system of the Tang Dynasty), was transferred to Bianzhou to join the army, and was falsely accused by officials. When Yan saw it, he marveled at Di's talent and said, "You are really a drop in the ocean." There is also an allusion of "casting pearls before swine", which is found in history books. It is said that the luminous wall of bright moon and pearl is placed on the road in the dark, and people always look at their swords. Why? It's hard to find in the dark. These three allusions are all related to pearls, some lost pearls, and some caused irreparable regret. Pearl is a precious treasure in the world, and everyone loves it. But there are also many cases of "returning pearls", "leaving pearls in the sea" and "casting pearls behind". This cannot but arouse people's deep thinking.

One is to know the goods. All things (commodities) in the world have external and internal characteristics and have certain uses and values. Some valuables have unique characteristics and great value, so there is a problem of identifying various "items". To know "goods", one must have the knowledge of "goods" and the other must have the experience and skills to know "goods". And "goods" are sometimes mixed with fakes, which requires the ability to distinguish between true and false "goods". Otherwise, not only do you not know the goods, but you will also make mistakes and regrets of "returning pearls with gifts" and "leaving pearls in the sea". The second is not to be fooled by illusion. Some "commodities" may have some flaws in appearance, or they are not noticeable, or they are artificially covered up, but this cannot erase the true value of these "commodities". People who look at "goods" in this way should look at the essence through the appearance and the gold through the sand. Don't be confused by the illusion and don't make the mistake of "returning pearls with gifts". They should, like Yan, eliminate the false accusations of officials against De, and pick up De, the "pearl of the sea", and entrust it with reuse. The dark night in "Cast a Pearl Behind Your Back" is just an illusion. Go ahead and you may get the pearls thrown by the dark road! And like those people in allusions, pearls are really "secretly cast", and water has no future. Third, it is important to cherish talents. Excellent talents, like pearls, are worth cherishing. The regret of missing pearls in these three allusions naturally reminds people of the burying and waste of talents. In a sense, the brain drain is greater than the pearl drain. Don't do stupid things like "buy bamboo slips and return pearls", don't "leave pearls in the sea" and don't "cast pearls behind your back". We should give pearl-like talents the attention they deserve and give full play to their light and heat.