Never heard of it. It must be small, and the tuition fees paid are very insecure. My colleagues and I are studying business English in Patterson English in Luohu. It's a small class of foreign teachers. We have classes twice a week, both in small classes. Sometimes, it's just two people, which is no different from one-on-one learning. I have been studying for more than 2 months now, and I feel great progress.