Without going into irrelevant detail, I need to know what the regulations are regarding the exchange of RMB in one's Bank of China account to US$ cash. The Bank of China is generally very toytown when it comes to anything even remotely out of the ordinary. Each individual in any branch either has their own view of how things can be done or if they don't know, they will save face by saying it cannot be done at all, even when it can. In short there are occasions where they are not to be trusted to do things properly.

Dave