What terms about photography explain "visual stimulation" and "structural fulcrum"?

This is the teacher's habit. It's also the proper name of your teacher.

Your teacher's so-called visual stimulation is nothing more than arranging the subject around the golden section of the picture (there will be four golden sections on the picture) or using the depth change of the picture and light and shadow to guide the vision to the position of the golden section, and sometimes using color, composition size ratio and dynamic and static contrast to achieve this effect. In other words, as long as the shooting theme is prominent enough, then this theme is the visual excitement of your whole picture.

The structural fulcrum is even less mysterious. It is the balance point of composition.

Finally, I hope all people's teachers will not instill their own views too much. After all, they should be teachers, teaching objectively, teaching students in accordance with their aptitude and adapting to local conditions.