Credit cards are just like gold coins. You can buy things in the mall, but you can’t sell them on consignment.

You can sell your credit cards and exchange them for RMB. The ratio of credit cards sold in our area is temporarily 5 Discount

Or you can buy hard currency such as multiple cards and sell them in exchange for silver coins, and then exchange the silver coins for RMB

You can only use gold coins and the balance in your credit card to buy things. Coupons are basically It's useless, each product has a maximum coupon limit. The purchased items are placed directly into the package. Sometimes the purchased item is a shovel, which needs to be right-clicked to use.