It is "old hat" to those of us that have seen multiple "BANNED/Not Banned" freakouts in our time. I'm guessing the Chinese govt is just trying to figure how to get a cut of the action, and prevent capital controls being circumvented. They didn't get all the exchanges either, and I'm not telling which they forgot
You see, I just don't believe that everyone in the entire Chinese central bank simultaneously knocked their heads against something yesterday and said: "Oh shit, Bitcoin is an increasing capital flight vector, let's do something temporary and inconsequential". Sure, some junior admins might actually believe it (usefully to the management), but the guys in the executive suite just can't be that naive. Not all of them.
It's possible of course that they're simply a bunch of humans, looking at the cards in their hand and saying to each other "on balance, still not sure what to do about this definitively". I'd entertain that, but whatever is happening behind closed doors, it will carry on like this, until it doesn't. I wonder what the catalyst (and the scenario) will be that changes that, and whether it will be prompted by increases in control, or a loss of it. Who fancies "loss"?