Winning a Nobel Prize, teaching an introductory physics course and a class of Tsinghua University freshmen are three seemingly unrelated things that Chen Ning Yang’s pioneering work in his field has brought together. Yang, winner of the prestigious award, is teaching general physics to 130 fresh undergraduates this semester.

　　However, professors like him are rarely seen standing in classrooms. For one thing, an abundance of scientific research occupies most of their time. Also, repetitive social activities take up too much of their energy. Apparently, teaching a class is much less remarkable than, say, giving public lectures. It is irresistible for some university professors to step out of this role.

　　Teaching is a key goal for universities; this is universally true. Professors, especially gifted ones, as important resources of universities, should focus on teaching. Their methods, intelligence and demonstrations are inspiring. They are beneficial to both improving the teaching atmosphere and inciting the passion to learn among students. Not only his 130 freshmen, but those professors who can’t get back in the classroom, could learn a lot from Yang.