What does this joke tell us?

1. If you look at the problem from different angles, you will find a solution.

Sometimes, a seemingly unsolvable problem can actually be solved by divide and conquer, that is, turning a big problem into a small one.

People who think they are smart are often stupid, so they can't be smart teachers.

The story of long pole entering the city:

There was a man in the state of Lu who walked into the city gate with a long pole. At first he stood up and held it, but he couldn't get into the gate. He came and hugged, but he couldn't get into the gate. I really can't think of a way.

An old man came here and said, "I am not a saint, but I have seen many things." Why don't you use a saw to cut off the long pole in the middle and enter the city gate? " So the Lu people cut off the long pole according to the old man's method.

Extended data

Appreciate:

This article is from Laughing Forest (written by Ren Wei Han Danchun during the Three Kingdoms period). Laugh at both the Lu people with long poles and his inflexibility; I even laughed at my old father who saw the pole go to town and laughed at his cleverness as a teacher. The latter is not only ridiculous, but also harmful. This story has been passed down to the present, which has evolved into "catching fools" in Xi's "Exploring the Record" in the Qing Dynasty.

Baidu encyclopedia-cut off the pole and enter the city