There are RMB in my bank card. How can I become a foreign currency (such as the US dollar)? Do you want to go to the bank to tell the staff? Question 2: Is there any

By huanggs
There are RMB in my bank card. How can I become a foreign currency (such as the US dollar)? Do you want to go to the bank to tell the staff? Question 2: Is there any handling fee? Question 3: Can you wait for the depreciation of the US dollars and change to the US dollar, and then wait for the US dollar to appreciate and return to the RMB?