Generally speaking, internal cards refer to bank cards issued by domestic banks, mostly credit cards; foreign cards are, of course, bank cards issued outside China (including Hong Kong, Macao and Taiwan);

Payment refers to the consumption of these cards;

Generally, internal card payment can be accepted and used by most POS machines; however, foreign card payment depends on the type of merchant’s POS machine, and some support foreign card payment. Card payment, some do not support it