Depends on how many levels you have learned. Basically, the first level is more than 10 thousand points, and the application for the second level can be discounted 1000 to 2000 yuan. If the course is arranged one-on-one, you have time to make an appointment. Others are like discussion classes. Basically, you can go whenever you have time. In principle, you are allowed to study with him for five hours a week. Of course, it's ok if you have time to soak there every day.