Some people on the internet say that this is a connotation map. What do you mean?

The traditional "diligence can make up for mistakes", in turn, is "Du Fu's initiative".

Du Fu was really busy some time ago (please refer to Du Fu's illustrations, a Chinese textbook circulating on the Internet).

There are also selected labels of cold jokes on the picture. A cold joke, that is, a failed joke, refers to a joke itself that is difficult to make people laugh and become silent because of boring, homophonic words, translation, or omission of theme, different logic, judgment or special content, or because of the mood or expression of the performer, but it does not mean that the joke itself is boring, which is also a manifestation of humor.

Please see the screenshot for details (click on the picture to enlarge)