China is going to find it easier to simply release a list of the people who ARE permitted to travel.
It’s a big country. See my post 21. It may be an over-reaction, it may be an under-reaction, or it may be on target for where they are now.
If they move to banning movement of anyone without permission within the next two weeks, which is entirely conceivable given the trajectory, then we are either looking at something used as a pretext for the biggest social clampdown since at least the cultural revolution or the biggest epidemic since 1918.