2. The complete course of Engineering Physics University published by Peking University, in red.
3. Cheng Jiafu's Electromagnetism and Mechanics
4. Optics course (Yao) This is a very old university course. There should be a reprint now. It was adapted by the textbook writing group of East China Normal University, but it was very good. I found it near Nanda.
Practical recommendation: 1. Black Guidance and White Answer of Physics Olympiad Guidance for New Senior High School, edited by Fan Xiaohui. Finish this set of books, study thoroughly, and ensure that you are the second prize in Jiangsu Province.
2. A supplementary topic to expand thinking, "Two hundred physical problems", was compiled by foreigners, by people in Cavendish laboratory and by people in Cambridge, just for fun.