Wang likes to brag when giving lectures.

I think what you said is too one-sided. I didn't care much about the identity of the teacher, but I heard that the teacher spoke very well in person and the content of the class was quite deep. Fire test. I don't just read textbooks. If I want to pass the exam, I really have to listen to the in-depth teacher course on the hour, and I have to go down and recite more. I listened to this teacher's class on 18, when I took two courses. I really admire this teacher's professionalism. It's not as bad as you say.