Is it a scam to exchange cash in Tik Tok banknote center?

Is it a scam to change Tik Tok's banknotes into cash? This is not a scam, because generally speaking, there are many kinds, especially before and after Pinduoduo, and after such a successful business model, many people use some such marketing methods and marketing means, which can't be regarded as a business model, marketing means, trying to attract people's heads and then usually scoring goals. But in this way, from the type, his this is actually the same as Pinduoduo, not to say that you can do it by one or two people. Key activities, in fact, this is not possible, you have to pull at least one, at least twenty or thirty people, which is probably the case, so it is still more difficult and troublesome. Of course, many people say this is a scam. Yes, sometimes it may be difficult for him to pull up and even swallow in the system. In fact, this is also a fact, so everyone feels different.