See if there is a UnionPay logo at the door of the store or on the credit card machine.

If there is one, you can't.

Of course, your card may support VISA/MASTER

So remember, when you swipe your card, if you support UnionPay, you should remind them to choose the route of UnionPay, which is better than choosing Visa.

if you can't use unionpay, you have no choice.