What's the difference between CG illustration and commercial illustration? What's the difference in the direction of work?

These two concepts are completely different. "CG Illustration" defines the types of illustrations from the means, media and methods of painting, and refers to illustrations drawn by computer drawing (CG = cg animation).

"Commercial illustration" is defined from the purpose of painting, which refers to illustrations used for commercial purposes and can be drawn in any way (depending on the requirements of demanders and the personal preferences of painters).

Nowadays, most artists will use computer graphics (CG) because it saves time and materials. CG is divided into 2D and 3D (in fact, in many cases, the two are complementary and need to be mixed).

In addition to traditional painting for books, commercial illustration is mainly used for "conceptual design" in the pre-production of movies, games and other fields (such as the setting of characters, scenes and instruments, etc. ) and "matte painting" in post-production.

Finally, the future employment direction of studying illustration is very broad. Can be engaged in film and television, animation, advertising, games, graphic design and even industrial design and other directions. Don't be too limited to yourself. These industries are interrelated. The most important thing in this business is to keep learning new technologies and trying new things. I study 2D animation, and now I do everything in 2D animation, print advertising, video editing, illustration and web design.

I hope my answer can help you. Come on!