I hope you can recommend some physics classics suitable for junior high school students.
Well, I bought it in the third grade, too. I found it difficult after reading it. Seriously, I've read this book, and it's ok. It's best to go to Wen Pin University, preferably majoring in mathematics or physics, otherwise it's useless to study! Unless, of course, you are very talented. Finally, if you want to see it, you'd better wait until you learn Newtonian mechanics in high school.