Authorities in regions including Shanghai, Yunnan, Gansu, and Hainan have issued warnings about scams involving 'taste cards' linked to virtual currencies. These scams lure victims with promises of 'free benefits' from well-known supermarkets, which are actually fronts for telecom fraud schemes. Police have identified that fraudsters use overseas communication software to connect with criminal rings. They distribute 'free trial cards' and document key information, such as community addresses and fake promotional materials, which is then uploaded to their superiors. Payments are settled using virtual currencies, adding a layer of secrecy to the operations. Authorities urge the public to avoid participating in these schemes to prevent becoming unwitting accomplices and facing legal consequences.