Basically, there are banks that handle foreign exchange business. You can go to the bank counter with valid identity documents. However, there is a limit to the amount. If there are no relevant certification materials that meet the requirements of the foreign exchange administration department, each person can only purchase foreign exchange of 50,000 US dollars per year, and the withdrawal amount is 3,000 US dollars per day. It is suggested to go to Bank of China, Agricultural Bank of China, Industrial and Commercial Bank of China or China Construction Bank, and the foreign exchange reserves may be a little more.