Northerners eat water chestnut.

There was a man who was born in the north and didn't know water chestnut. He is an official in the south. He ate water chestnut at the party and put it in his mouth with the horn shell. Someone said to him, "You must shell water chestnut first." In order to cover up his shortcomings, the man said, "I am not ignorant." The reason for eating shells together is to clear away heat and detoxify. " The person who asked said, "Is there such a thing in the north?" He replied, "There is no land behind the mountain ahead." Water chestnut grows in water, not in soil, because he insists on saying what he doesn't know as knowing in order to pretend to be knowledgeable.

Enlightenment: knowing is knowing, not knowing is not knowing, and knowing is also. If you don't know, you will make jokes and be laughed at. The knowledge in the world is endless, and everyone's learning ability is limited. Only by learning with an open mind can we gain true knowledge.

Many times, we have to ask if we don't understand. Don't make fun of northerners eating ling. Learn more every day. No matter what industry you are engaged in, don't be shy to ask questions, and be a person with culture and knowledge.