Some intermediaries promise to attend "preparatory classes" so that they can easily enter the university without a language test. In fact, "preparatory classes" not only cost more than domestic ones, but also some preparatory classes have final exams, and the passing scores are generally much higher than the passing scores.

Try to pass the language barrier at home. If you have to attend the preparatory class, you should write to the international student management department of the university applying for it and ask about the nature of the preparatory class and the final assessment criteria. It is worth noting that preparatory classes are not suitable for all majors.