Zhang Xinghua, the teacher of College Physics II, speaks very well. According to the relevant public information, Mr. Zhang Xinghua, led by the physics teaching team of Beijing Jiaotong University, carefully produced the course College Physics II, which includes four parts: heat, vibration and fluctuation, optics and quantum physics. The explanation is simple and easy to understand, which is convenient for autonomous learning. Major universities regard his explanation as the courseware and basis for learning.