What do you want to ask? If it is an institution, it must be true. It is indeed a training institution. If you ask whether the course is effective or not, I think it depends on the individual's learning level, because teachers only teach methods, and how to learn depends on themselves. Just like taking classes in the same school, the same teacher has the same class, but there are poor students and top students. In fact, the final competition is your own efforts, so you can go to the open class first to see if the content and teaching of his family are suitable for you and whether the teaching style of the teacher likes it, and then come back. However, it must be confirmed that any study, especially online classes, must be determined, mainly by self-control. Don't give up halfway, it will cost a lot of money and time, and it is definitely not worthwhile.