Once upon a time, there was a northerner who lived in the north. Suddenly one day, he was sent to the south to be an official. He is both excited and worried. Excited that he has never been to the south, he is curious about everything there; I'm afraid I'll be laughed at because I haven't been there and I'm not familiar with it. I'm afraid I'll do something wrong and say something wrong. But whether you are worried or excited, you will go sooner or later.

When the deadline came, northerners came to the south with anxiety. On the day he arrived, several of his local colleagues were very enthusiastic. In order to welcome him, they held a grand banquet in his honor. Colleagues think that he often eats in the north and may not be interested in good wine and food. So everyone tried their best to bring some freshness. Everyone knows that this is his first visit to the south. It is estimated that he seldom eats southern specialties, so he specially prepared a plate of water chestnut for him to taste at the dinner table. I hope he will like it.

After everyone sat on the table and introduced each other, the colleague ordered the servant to start serving. Soon, the water chestnut was on the table. Northerners look at the water chestnut and think, what is this? He didn't know how to eat it, but he was afraid that others would laugh at him and didn't want others to know that he hadn't eaten it. He pointed to the water chestnut and said to everyone, "Please!" What he means is to let others eat first, see how others eat, and you can eat with them. But after all, he is a guest from afar. His colleagues not only didn't understand what he meant, but also thought he was polite. So colleagues showed more enthusiasm, insisted on letting northerners taste first, and said modestly, "You first, you first!" " "

Northerners can't do anything at first sight, but let everyone stop eating and give in to each other. I had to bite the bullet, close my eyes, grab an unshelled water chestnut and put it in my mouth to chew. While chewing, he said, "Yes, it's delicious."

A colleague saw it and said to him, "You should peel off the shell before eating water chestnut. The shell can't be eaten. "

The northerner knew that he had made a fool of himself, but he was too proud to pretend to be an expert and let people see his flaws, so he smiled and pointed to the water chestnut and said, "Of course I know that you have to shell the water chestnut first. That's how everyone eats. But I have my reasons for eating like this. Do you want to know? " A colleague said, "I want to know more." Northerners went on to say, "Although this water chestnut shell is hard to chew, it has a certain effect, that is, it can clear away heat and detoxify." These days, the boat and the car are tired, and the food on the road is not good. I feel a little angry, so I eat shells together, just to clear away heat. "

Although those colleagues often eat water chestnut, they really don't know that its shell can clear heat. Now, after listening to the words of northerners, I can't help but be dubious, and some even admire the insights of northerners. So, another colleague asked, "Do you have this kind of thing in the north?"

Northerners are naturally a little proud when they see that the first trick has deceived others. He picked up another water chestnut and pointed at it and said, "You're right, we have many of these things there! How else do I know its shell is edible? There is a mountain in front of my house and a mountain behind it. There are no water chestnut trees anywhere! "