foundations of mathematics
Mathematics is the foundation of physics. You need to learn advanced mathematics, linear algebra, probability and statistics, complex variable functions and differential equations well.
Professional courses
Specialized courses such as mechanics, heat, optics, electromagnetism and atomic physics are something you must master. Theoretical courses such as theoretical mechanics, thermodynamics and statistical physics, electrodynamics and quantum mechanics are also what you need to study.
College English Test Band 6 (CET-6)
If you still have spare capacity, you'd better pass level 6. After all, most of the current physics research documents are in foreign languages.
willpower
Self-study of physics requires perseverance, so don't give up easily. As long as you stick to it, you can confidently say, "I'm going to enter the physics graduate school!" "