A credit card can bind up to five micro-signals. Because the card binding after WeChat real-name authentication can only bind the bank card under my name, the same ID card can authenticate up to 5 WeChat payment accounts.

A WeChat account can be bound with up to ten bank cards (including credit cards). Of course, you need to note that although a micro-signal can bind ten cards, an account can only bind three bank cards of the same type from the same bank at most. For example, a WeChat account has been bound with three industrial and commercial bank cards, so it cannot be bound with industrial and commercial bank cards.

And you also need to note that the same bank card can be bound to 3 QQ accounts in addition to 5 WeChat payment accounts. Tie a card on WeChat, just tie a common card, and QQ is the same. Bind the card, log in to WeChat and click "I", then click "Pay", then click "Wallet", then select the column of "Bank Card" and click "+Add Bank Card" to bind the card.