The Chinese exchanges still have money coming in and out through a variety of methods. The primary method is internal bank transfer from your account to their account, using one of the state banks. It's not clear if this is a permanent solution, but it's how things work as of now.
The main thing that happened a few weeks ago was that 3rd party processors were forbidden from dealing with bitcoin. The transfers from banks to exchanges were handled by 3rd party processors, so for a few days there was no way to get money into the exchanges.
Ah. So this is something like US DHS coming to raid the accounts of Mt.Gox affiliate Mutum Sigillum at Dwolla.
The Chinese exchanges are then adopting the practice of Coinbase, the situation sounds much the same (Coinbase initiates ACH transactions with your bank and makes you wait the 5 days until it clears to actually receive and withdraw your Bitcoins.) Mt.Gox works the same way now, except last I heard their Japanese bank was limiting them to some absurdly low number of ACH transactions to USA, like on the order of a maximum of 10 per week. Coinbase, being a US company with their choice of banks, obviously does not have this restriction.
The main thing that happened a few weeks ago was that 3rd party processors were forbidden from dealing with bitcoin. The transfers from banks to exchanges were handled by 3rd party processors, so for a few days there was no way to get money into the exchanges.