Not gonna happen. China will never give up territory they've bled for.
They'll find another puppet and attach tighter strings.
Squeeze the north now. Press the north. Stand up. Upon the next provocation, retaliate in force. Let’s solve the problem.
The north’s military is crap. North Korea will cave and we can reunify the pennisula. Solve the problem.
Reunification will kill nuclear programs in several third world countrys.