What literary accomplishments should a qualified photographer possess?

No matter what occupation, I think the more knowledge, the more help I get.

Your question is very good. As a photographer, no matter what professional direction you are engaged in, you must have literary literacy and artistic literacy. I suggest you read Introduction to Art, History of World Photography, History of China Art, History of Western Art and Comparison of Chinese and Western Cultures. In painting, you can look at books on composition and color. Such as: light modeling, photographic composition, color composition and so on. These are all very helpful to you. At least you won't be at a loss when discussing topics other than photography expertise with others.

In short, there are many things to learn. You can choose these books, they will help you. If you have any questions, you can ask me.