No blowing, no blackening. Dapeng's teachers are very good. They know their students very well. When I first signed up, I had many questions about this course. I ask the class teacher many questions every day. Sometimes I feel annoyed, but the class teacher will still answer my questions patiently, which is very touching. Now the class is officially started. My professional teacher speaks very well, and the style of lectures is very much to my taste. I am very satisfied and struggling!