According to Aiqi's inquiry, the green brick tea in Yanglou Cave is not legal, but a pyramid scheme, not a direct sale. According to news reports, Taishun Zhang, Ma and other jurisdictions organized publicity and promotion of "Yangming Mall" APP to sell Hubei Chibi Yangdong blue brick tea in the mall. Under the guise of installment rebate, they develop members to the elderly groups in society, attract people to seek benefits, and earn agency fees to develop offline. The incentive fund of the organization comes from adding new members and their investment. The hierarchy is divided into seven levels from low to high. The higher the level, the higher the mall subsidy and the higher the points. Therefore, high-level people usually use their own mall subsidies and points to buy tea for people at the bottom, so as to realize cash. In this way, disguised pyramid schemes illegally absorb the funds of the elderly. First, attract the elderly to become members with words such as "treating diseases", "preserving health" and "preventing cancer", and then throw bait to develop members, promising to lure the elderly to invest with high rebates.