What is a "membership-based warehouse supermarket"?

In the traditional sense, a membership store refers to a store that organizes and manages members to implement purchases and sales. Its characteristics are firstly warehouse-style sales, and secondly, using a membership system to lock in target customer groups. However, there are currently two forms of membership system in Jingcheng Supermarket. One is professional and strictly managed membership-based supermarkets such as "Wal-Mart Sam's Club" and "Metro". This kind of store conducts business management and market operations entirely in accordance with the traditional membership model. Before consumers can enter membership-based supermarkets to purchase goods, they must first become members of the company. Another type is the "compatible" membership-based supermarket. Consumers can apply for a "membership card" for free in some stores with just their ID cards. With this membership card, they can enjoy discounts in the store, but the store will not restrict any "membership card". Non-member" consumers make purchases.