The truth of buying bamboo slips and returning pearls
Zheng people only stared at the exquisite wooden cases and gave up precious jewels. It can be seen that things must be clearly defined, and people who buy gifts and return pearls can't just pay attention to the appearance of things without seeing the essence of things. Only by seeing the essence of things clearly and prioritizing can we make appropriate choices. The idiom originally meant to put back the wooden box bought to hold pearls; The metaphor is improper choice, and the secondary things are better than the main ones.