The Diplomat has a piece on the backlash in South Korea against Chinese undermining of Korea’s cultural authenticity.
I noticed when I lived in Beijing a distinctly paternalistic air would come from Chinese people when the subject of Korea — North or South — came up (but especially South). There’d be a tone of incredulity in their voice and a look of skepticism would come across their face, as if to say, “You don’t really take our little Korea seriously, do you? They’re not even a real people; they’re just a wayward band of Chinese from the old days.” There’d sometimes be comments to that effect to go with it, as though Korea were a renegade province.
They waved off mentions of the accomplishments of South Korea, too. Never mind that it takes a lot more effort and responsibility of a country’s people to run a democracy, much less one of the most successful democracies in the world, one that kicked its corrupt president out of office and then had one of the most effective responses to COVID-19 in the world, despite — like Taiwan — being on the doorstep of the country where the outbreak started. It riles China to have these awkward counter-examples to its authoritarianism right next door.