Hello, there is only one credit card limit available, and the US dollar account is converted into US dollars according to the limit of RMB 4,000. If there is consumption in your RMB account, the US dollar will also deduct the equivalent US dollar.

If there are bills in RMB and USD, you should repay them separately, or you can open an automatic foreign exchange purchase to exchange RMB, so that the system can automatically exchange them into USD to help you repay.

If you have any other questions, I suggest you consult "Customer Service Online" /cmu/icslogin.aspx? from = B& amp； Logincmu=0. Thank you for your attention and support!