Right, because until people actually move money off the exchange, to the point of no return, most trading can resume as normal. The real consequence to the deposit ban will be a gradual decline in volume as the money that is withdrawn cannot be replaced by money moving in.
This is China we are talking about! Remember they have a big grey market that likely the exchanges will move to allowing people to convert the fiat cash to bitcoin quietly while the government is looking the other way.
The western media likes to add drama to their news reporting, blowing things out of proportion, from what I understand in the recent Max Keiser report is that China is still trading bitcoin as usual.