Reccommended for various level students

As I want to learn relatively practical and business-level Chinese, my teacher always prepares the appropriate materials with various topics and we read and discuss the articles.
Discussion is always exciting and I learn a lot of vocabulary and expressions from them.
I usually make flashcards after classes and memorize them. After one year of training, my vocabulary got much more abundant and my colleague praised me that my Chinese improved quite well as a result of discussions in the classes.
I'm enjoying learning here.