Leofoo has four different grades and different types of membership cards, and the loyalty card can be registered in the official WeChat account of Leofoo. Silver cards need to be consumed in any store in Leofoo; A gold card can only be processed if it costs at least 5,000 yuan at a time or15,000 yuan a year. The diamond card needs to be consumed more than 10000 yuan at one time or accumulated more than 30000 yuan in one year.