What does this idiom mean?

What does this idiom mean? Introduction is as follows:

Zhang's hat is worn on Li's head, which means that the object is wrong and the fact is wrong.

Put Zhang's hat on Li's head. Metaphor confuses the object with the fact. Synonym: full of flaws? Specious? Antonym: beyond reproach? Not happy at all? Something similar: Zhang Si? Li Bai? Plum? Li Gang? Li Feng? Luggage? Peach and plum suitcase

Make the following sentences:

1. Say that Li Bai's poems belong to Du Fu. Isn't this a crown?

2. Restoring the situation can avoid arrogant and contradictory mistakes.

You must look carefully, don't be arrogant and blame the wrong person.

Mom often puts the names of movie stars on her head, which makes us laugh and cry.

These people try to describe "relativity" in physics as "relativism" in philosophy.

6. The gangster tried to evade criminal responsibility by using the muddled technology of Zhang Guan and Dai Li, and was caught by the police at a glance.

7. I often talk nonsense about Zhang Guan Dai Li, the character in The Water Margin. The teacher told me not to read the book gulped down!

8. The certificate belongs to Lao Li, but he gave it to Lao Wang.

9. We were so arrogant that the audience burst into laughter.

10. He is confused by nature, always arrogant and makes a lot of jokes.

1 1. The example given by the speaker is really ridiculous.

12. Shen Yanbing's pen name is Lao She. If it's not Zhang Guan Dai Li, what is it?

13. Let's not swallow the dates, but savor the good words. He is careless about everything and half-hearted.