In fact, both of them are OK in the aspect of upgrading from junior college to undergraduate college. Teacher Mengfei jumped out of the new knowledge and went it alone. What I'm doing now is ok. But on the whole, it is better to learn something new. Many textbooks in Mengfei are pirated, not first-hand. But now they also publish their own textbooks. Many so-called champions or achievements propaganda are said by themselves, and there is no way to study them. If you know something new, you will be more realistic. According to the publicity materials, in the past two years, there have been three more top scholars in Mengfei than new knowledge. But the overall teaching quality and level of new knowledge seems to be higher, because there are more new knowledge in the top ten, that is to say, if you input new knowledge, you will get better educational resources and rank higher in the exam. However, in terms of text, publicity, design, vision and appearance, the new knowledge is not as good as the dream fly in terms of texture. For example, the shaping of classroom and brand image, you will have a very advanced feeling in your dreams.