Chang 'an lottery is a multi-level marketing model, also known as pyramid selling or direct selling. This model usually takes high returns as bait, allowing participants to gain income by pulling people's heads. However, this model has great risks, which may involve illegal fund-raising, fraud and other issues, and may even be identified as illegal pyramid schemes.

It is recommended that you participate in such activities cautiously, and don't trust the promise of high returns easily, so as not to cause economic losses and legal risks. If you encounter similar problems, I suggest you report your complaints to the relevant departments in time.