All right. Bu Xianhe, professor of Nankai University, doctoral supervisor, director of Tianjin Key Laboratory of Metal and Molecular-based Materials Chemistry. Bu Xianhe always remembers Mr. Chen's initial training for himself, and also put such educational ideas and teacher training into his scientific and educational work. In the process of cultivating students, we pay special attention to heuristic education, whether it is experimental design or paper revision. Through repeated discussions, students can understand and experience themselves, so as to achieve mastery.