Teachers can still do it. I know one of them is from Hoda University, and his spoken English is not very good. What he told you was just some well-known problems. The lecture was just so-so, and I thought the information was better. Besides, as we all know, English learning depends entirely on you. If you want to take the postgraduate entrance examination, you'd better study hard and listen to more tapes.
If it is level 4, you'd better listen to the real questions recorded over the years.
Qiyuan advertisements are flying all over the sky, but not many people actually go there, not as hot as they say.