The problem of tourist credit card in Korea

There are many places in Korea where you can swipe your card. Generally, you can brush UnionPay when you go abroad, which saves the currency conversion fee. More cost-effective. You can swipe your card at places to eat and convenience stores. Now basically, one card goes all over the world. Except for roadside stalls, you only need to prepare a little money, but some stores can't use UnionPay. You need to prepare a visa in case of emergency. I wish you a pleasant journey and hope to adopt it!