At this point what would the disadvantage be of South Korea preemptively invading the North? If they attack first they might save themselves a few tens of thousands of civilian casualties by cutting short the bombardment of Seoul. It would also give them a head start to the northern border knowing full well they’re going to meet the Chinese before they get there.
No rational person wants to give the order to start a blood bath but how many people have died because we didn’t finish this little limited war with our “most favored nation” China sixty years ago?
China will eventually get with South Korea and mutually come up with a solution to the “North Korea Problem”....Both countries fear a massive influx of refugees streaming over their borders, so it is in both countries’ best interests to come up with a mutual solution. In turn, China will displace the US as South Korea’s main ally, which certainly would be a win for China, as well.