The Chinese were humiliated by the destruction of their North Korean sort-of ally, so the world held its breath and waited to see what would happen next. It did not have to wait very long.
A few days after the end of the war, the PLA poured over the border in spite of the dangerous levels of radiation that still existed all over the country. China essentially took over the governance of what was left of North Korea. The US and the South Koreans, not wishing to provoke the Chinese further, and happy to be free of clean-up duty, did not object strenuously. North Korea became a Chinese vassal state.
Violent anti-American protests broke out all over the world. Seeking to drive a deeper wedge between the US and its erstwhile allies, the Chinese drafted a UN resolution condemning the American military action and imposing sanctions. Russia voted for it, and it had a majority, including several traditional American friends, but it was vetoed.
At home, things were very different. The GOP, once badly divided, united behind Trump and his war. Trump demanded emergency powers to silence the “treasonous” opposition to the war. The outcome of those debates was not known at the time this was published, but there was serious talk of a parade and a Trump Monument.