not necessary. Duodian convenience store is a chain convenience store brand, which mainly opens and operates chain convenience stores in Beijing. Starting to use a member is an indicator for the operation department to complete the membership. Consumers have the right to choose and can complete the payment without registering a member, so it is not necessary to use a member. Mainly engaged in retail products, including refrigerated ready-to-eat goods, on-site production and sale of hot food goods, snack foods and daily necessities.