Now have a plenty of expanding business, increasing the number of customers, will let Jianqun send gifts, timely shut down and so on. Some even thought of the form of vigorous publicity.

But such activities are generally voluntary. If you are asked to pay a deposit or join a membership, it is generally a lie. Generally don't believe it easily. If you just join the group to popularize knowledge, you can have a look. As long as it involves paying money, we must consider it clearly to prevent fraud.