Second, if you want to settle foreign exchange, you can choose online banking, self-service terminal of China Bank (not ATM) or counter operation. It is recommended to open online banking, because the online banking of China Bank is free. If you surf the Internet, you can also check the exchange rate. You can check the exchange rate and settle the account.
PS: Where did the dollars come from? Abroad? If that's the case, you should open online banking at the bank and ask the counter for bank information, including SWIFTCode. Anyway, they will just talk to the counter or lobby.