Don't go to Beichen, because it's too expensive, and they are all college students, just putting on airs. My cousin studied there for several months, and her grades didn't improve at all. She may have some truth, but Beichen's answer is that I can't guarantee your progress, only that she won't drop. Anyway, there are a lot of refunds. Now educational institutions are all like this. They are greedy and have immature teachers.