Is blinding one's eyes an idiom story?

This idiom is also a blind eye

"A blind eye cannot see Mount Tai" is often used to describe someone who is blinded by extremely small things in front of him and cannot see the whole and essence of things. This comes from the sentence in the ancient book, "If a leaf blocks your eyes, you cannot see Mount Tai; if your ears are plugged with beans, you cannot hear the thunder."

When later generations interpreted this phrase, "Laughing Forest" written by Handan Chun during the Three Kingdoms period was the most interesting. He told a joke that "a leaf blinds the eye and cannot see Mount Tai". He said that there lived a poor scholar in Chudi who wanted to make money through evil ways. The scholar remembers reading the story of the mantis hunting the cicada when he was studying. The mantis hid behind the leaves and succeeded in one fell swoop.

So he looked for leaves to shade the mantis. He actually found a leaf with a mantis hiding behind it. He quickly picked it off, but accidentally slipped his hand and the leaf fell into a pile of fallen leaves. The scholar put all the leaves into a basket, took them home and blocked his eyes one by one for testing, and asked his wife: "Can you see me?"

At first, the wife truthfully answered that she could. But the poor scholar took the trouble to test it with a basket of leaves. His wife suddenly lied to him and said: "This leaf has shaded you, and I can't see you." The poor scholar felt like he had found a treasure, thinking that this was the sacred leaf hiding the praying mantis. He took the leaf with him and ran to the market to shield his eyes from the vendors' goods. Of course, the businessman immediately caught him and handed him over. As soon as the county magistrate heard the case, he burst into laughter. He felt that the scholar was stupid, pedantic, and ridiculously childish! He was scolded as "a leaf blinding his eyes, unable to see the mountain!" He was beaten severely and sent home.

A joke is a joke after all, but it is very appropriate to use exaggerated jokes to compare similar actions of some people in real life.