I have done a lot for Xiamen. Foreigners who use foreign currency cards such as VISA/MasterCard/AE/DC/JCB to spend and shop in China must use foreign currency card Pos machines in corresponding channels, large supermarkets, hotels and scenic spots. If merchants need foreign currency Pos machines to collect money by swiping foreign cards, they should apply to the bank for such internal and external POS machines. If there are certain requirements, it is recommended to take a professional exam.