Don't use anything in this hall, it's all chemical products and pyramid schemes that have long been exposed by everyone. Use a few cents of products to package and publicize the cure for all diseases. Anything that turns black and green is a cure for all diseases. In fact, it is all hype. In order to sell at a high price, do manufacturers ask a few cents for a few hundred dollars? Is this still proof? What is not a liar? What team, take you to make money, how can you make money without others, whose money do you earn, and how many people below will lose money and pressure goods? This is a typical pyramid scheme. Don't be cheated.