Every school has its own celebrity story. The four famous mouths of Wu Da are Shang Zhongsheng, Zhao Lin, Li Gongzhen and Li Jingyi. Among them, Zhao Lin impressed me the most. He said, "If a teacher can't touch himself during the lecture, he can't touch the students." "This is my podium, and I have been standing here.". At that time, he was also my favorite thought professor when I watched Lecture Room.

Liu Keming, the most famous mouth of Huake, has been heard by his friends. He is knowledgeable and has a deep understanding of China culture. However, some people say that he is xenophobic, which I don't know. Probably people who have taken his class know better.