1. RMB: You may take up to 6000RMB out of this country but i can not see what's the point.. (RMB can be used in Southeastern countries but this is not our story..) 2. To get USD: according to the regulation you can buy 2000USD from the bank at the official exchange rate..However, it's easy to get whatever you want through some side channels, i.e. from people whose salary is paid in USD but need RMB regularly, from some reliable "market dealer".. The market rate is not much different from that of the "official" one... 3. To take USD out: if the amount is more than $2000 (up to $4000) in cash, the bearer need to get a certificate from the bank..(easy to get just at the cost of a few bucks..) N.B. My suggestion is NOT to take more than 4000USD in cash even the airport is not that strict with this at times......You can always wire the fund over earlier or later ... Or, deposit the fund into an USD credit card or debit card so that you can encash at ATM machines in states..There is a daily limit on this at a minor service charge though..(1% roughly)