The number of remedial classes in Changsha is the best. Their political English teacher is very good, and the class place is relatively fixed. They are all student apartments in Huda Tianma. You'd better sign up for the one-card program, which is more effective, especially in politics. Generally, you don't want to watch it by yourself, but the one-card program with a wide range of political knowledge will basically start to help you review it every month. I suggest we go and have a look and compare more.