And, as I promised, I'll comment it (the philosophy work of Mr Zhang).
1. There are different art definitions. Some of them, well, pretty strange.
2. That "imbalance" word. I think, maybe because of the computer translation, but sounds a bit incorrect. Maybe you meant "difference" or "additional reality", "additional elements", "fictional elelments"?... You may explain, if you want, what did you mean or write the original Chinese philosohy word. It's interesting, really.
3. About this: "That is to say, the artistic content expressed by artists in a certain form cannot be guaranteed to be exactly what the artists originally thought in their consciousness. There may be some "loss" of the content to be expressed." is true and also it's true that every person will perceive it in his or her own way. And then, the artists' ideas are even more far (in the understanding). That's one of the reason why it's difficult for the common people to communicate every time in the right, understandable (really understanding each other) way.
4. Yes, the form and the content. This is a dialectical way of seeing the things.
5. About this "...in the end, viewers of art may receive information that may be processed differently": yes, but when it comes to simple things, usually, it's without problem. For example, if you draw a horse, most of the people will see it as a horse, not as a frog, grains, car, letter or something else.
6. About this: "The so-called "thousand audiences have a thousand Hamlets" is the best portrayal of this phenomenon. It is impossible for us to guarantee that the content expressed in art will not be "distorted" in the eyes of the appreciators. Of course, this will also be affected by the artist's art form and artistic level, but we must not forget that the appreciators themselves are also one of the determinants of art content." Sure, this process is bilateral (artists-audience).
7. About " In today's society, artists create art only because of money and fame." -- maybe there are still some who create art because of the art (especially the rich and already popular artists who don't need to earn much more money and fame; also some artists who really love the art.)
To be continued...