Of course, Zhang Shaojie has made great achievements in academics, and once studied academics with internationally renowned linguists. The lecture is organized, and you can certainly learn knowledge. Unfortunately, because of his high level, his lectures are a bit difficult, and sometimes students can't keep up. Haha ~

Liu Yongbing and Yang Yuchen didn't understand or listen to their classes.

Cheng is also very good.

Brother Sui is easy-going and close to the people. Unfortunately, I won't say much about spoken English. I have heard about him before. There are many things outside lectures, but few things in books, and they are scattered. You have to teach yourself.