Paraphrase: cover: cover. A leaf blocked the eyes, and even the tall Mount Tai in front of him could not be seen. Metaphorically confused by local phenomena, unable to see the whole or the whole.

Allusion: There was a scholar in the state of Chu who, due to his poverty, wanted to find a way to make a fortune.

He read a book that said, "Whoever gets the leaf that the praying mantis covers when he catches the cicada, no one else can see it. He believed it and looked up under the tree all day. Hey! He finally saw a praying mantis hiding behind a leaf, ready to catch it! He quickly plucked the leaf. But the leaf fell and mixed with the fallen leaves on the ground, and he could no longer identify it. He had to sweep all the leaves home and try them one by one. He covered his eyes with the leaf and asked his wife, "Can you see me?" The wife always said, "Yes! Later, the wife was tired of him asking and answered casually: No! He immediately took the leaf and went to get other people's things in person, only to be twisted to the yamen. After being interrogated, the county official held back his laughter and said, You are really a blind eye, you can't see Mount Tai!