Hello, it's ok to test someone. Now, UnionPay can be used in major shopping malls in Hong Kong. Shopping in Hong Kong requires only a small amount of cash. Other UnionPay cards can be converted into RMB according to the exchange rate of the day, which is more cost-effective.

I hope the answer will help you. If you need more information about Hong Kong, please pay attention to the Hong Kong fax subscription number. Thank you.