The first question is that your card has already been applied for, so it has nothing to do with your all-in-one card. It will not affect the use of your credit card.
Second question, credit cards can be used nationwide. Unlike debit cards, they do not have problems such as handling fees for cross-regional consumption. How to use them with you in your original city? Exactly the same.
The third question is that credit card repayment can be done at our bank counters in any city, and there will be no handling fees. The answer is the same as the question. How to use it with you? Exactly the same as in the original city.
The fourth question has the same answer as the second and third questions. How to use it is exactly the same as in your original city. Don't make any special application.
Also note:
If you move to a new city, you need to call the credit card customer service to change your mailing address (the bank will mail you a bill every month). If your mobile phone number It has also changed. You also need to call customer service to make changes. Otherwise, the bank will not be able to find you if it wants to notify you.
Best wishes
Happy card use!