What is the metaphor of a frog in a well?

Frog at the bottom of a well is a metaphor for a man with short knowledge.

Source:

1, the frog at the bottom of the well is arrogant, so it is better to specialize in the East.

2, Mr. Jiang Hai's knowledge, the trail is a frog in the well, how dare you teach others how to teach others.

3, the frog in the well, what you see is not big. The light of fireflies is not far away.

4. I know I'm a frog in the well. The Japanese only say that these people are unique now.

Selected from: Biography of Ma Yuan in the Later Han Dynasty by Ye Fan in the Southern Song Dynasty, 20% discount on the view of Jurchen by Ming Ming, and Romance of Gods by Xu Ming Lin Zhong, etc.

Explanation: This idiom refers to a frog at the bottom of a well, thinking that the sky is only as big as the wellhead. This is a metaphor for those who are short-sighted. As subject, object and attribute in a sentence, it contains derogatory meaning.

Frog at the bottom of the well makes sentences

1, people don't have to walk in fear and trembling under the bright light of high-rise buildings on the shore, and they don't have to sigh helplessly at the poor sky overhead like frogs at the bottom of a well.

After learning this text, I think frogs are really ignorant. I need to know more about some important events so as not to make jokes like frogs.

The teacher always teaches us not to be a frog in the well, we know a lot. Now we finally understand the teacher's good intentions.

4, the frog at the bottom of the well, jumping out has a broad world. If you want to eat a swan frog, you might as well start by eating moths.

The master is dismissive of the opinions of these frogs at the bottom of the well, and the chatterbox is still very complacent.

He is like a frog in the well, and he is also the kind of frog who can't calm down when he encounters a little wind and waves.