China likely has its agents and supporters spread throughout DPRK’s Army. When TSHTF, China will attempt to organize them into a Government.
Much will happen behind the scenes. What we will likely see from the distant vantage point in the West is announcement of a coup and a quick, bloody purge of the Kim regime.
I suspect behind the scenes, China and South Korea have been talking about how to handle NoKo when the SHTF.
For ONCE I’d love to see the FHTS!