Is Tsinghua Han Zhiqiang a particularly bad teacher?

No. Han Zhiqiang is a doctoral student, associate researcher and doctoral supervisor of Tsinghua University Institute of Materials. He is a member of the Technical Committee of Special Casting and Nonferrous Alloys of China Mechanical Engineering Society, the Special Committee of Squeeze Casting of China Military Engineering Society, and the Committee of Integrated Computational Materials Engineering (ICME) of American Institute of Minerals, Metals and Materials (TMS). He is serious and responsible to his students, and his lectures are vivid. He is the favorite teacher of Tsinghua students.