I don't know how to use BOA to send money back to China, but I did use Citibank to send back money once to Bank of China. $40 for wiring service, the money arrived China after three days, when my parents went to get the money, they can choose to keep it as US $ or change it to Yen. Bank of China did charge the foreign currency exchange fee when my parents changed the $ to Y. The only thing I needed for wiring the money back to China was to know my parents'  account number, the bank's ABA number( or some other name? any way you may check the Bank's website and get it), the Bank's address where your money will send to, and enough money in my account of course. This works well if you need the money in a hurry. If not, why not use check? I heard people say that check is the most cost-saving way to send money back, though sounds like it generally take 2 to 3-month.