VISA is an international credit card standard, while UnionPay is only a cooperation standard between domestic banks. In Hongkong and Taiwan Province, UnionPay service is still in the process of popularization, and failures caused by imperfection are common.

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Whether the credit cards of CCB and ICBC support visa or master, there is absolutely no problem for mainstream consumption in Hong Kong and Taiwan. Large and medium-sized shopping malls, hotels, entertainment and shopping places are basically available, and even convenience stores can be used. In Hong Kong, where I just went in July, credit cards were basically unimpeded.

If it is an ordinary UnionPay card, it is very common in Hong Kong, and the penetration rate is much higher than expected. Except for small restaurants and stalls, there are basically. In addition, it is easy to find a self-service cash machine that supports foreign currency exchange, which is very convenient. UnionPay cards in Taiwan Province Province are still in the process of popularization, but the popularization rate is already very high. I believe that 1 year will reach the same level as Hong Kong.

There is no need to deposit local currency, and the exchange is automatic. You don't need to register. You can exchange some pocket money at the airport if you like.

It is recommended to exchange some petty cash, use visa or master for high consumption, and bring UnionPay card if you don't have a credit card.