There have been numerous predictions that a collapse in North Korea is imminent. (A recent example)
From what I've read, China would prefer a quiet regime change but given the alternative (total collapse, humanitarian crises, etc) the status quo is preferred. This seems to be reflected by their actions in the UN.
While these represent what are the public and well circulated - albeit vague - plans to prevent a N.Korean collapse, is anyone aware of anything that contains any details on what would happen if they actually collapsed? I'm more interested in what China would do given a previous question that addresses, in part, S.Korea's and the United States' plans.