What would happen in Bitcoin in the same situation when you have Chinese miners cut off from the rest of the world and mining their own fork with their PH/s for 3 days?
Since the Chinese miners would still have less hashing power than the rest of the world, their chain will get "orphaned". When their nodes rejoin the network,
they should automatically choose the fork with more "work" in it. Many transactions would have to be rebroadcast, and such nodes will likely enter
"safe mode" if that happened.
Edit:
Somewhat relevantAlright, a stake in NXT is virtual hashing power, which can be quickly packed up and moved to a host outside of the scope of the great firewall, should such a force majeure event manifest itself. Think of it as a physical server vs. cloud machine which can be migrated in a matter of minutes. If that were to ever happen, it would be longer than 3 days because it would mean some powerful entity is really pissed off, the chinese Bitcoin miners would risk to never be able to connect to the rest of the world in that case, while chinese NXT forgers would shrug it off as a mere inconvenience.