Do you really think so? During the period of the Kingdom of Korea, after the fall of the Ming Dynasty, they regarded themselves as a "successor kingdom", which is the "true Chinese Empire"(Similar ideas have emerged in both Vietnam and Japan). Their intellectuals proposed an ambitious plan to conquer the "barbaric empire". Of course, they dare not take action for hundreds of years.
This became the origin of extreme nationalism in modern South Korea, but ironically, their "empire" only lasted for a short period of time and no longer existed.
Now they have not stopped their activities to undermine China's influence. Although these people have basically converted to Christianity and abolished Chinese characters, this does not prevent them from actively moving Chinese culture and claiming to be their original creations (of course, they will also claim that Chinese people have learned or stolen their culture).
Their goal is very clear, to use the West's tolerance for South Korea and suppression of China to completely negate the status of Chinese history and culture in the world, so that they can claim to be the inheritors of orthodox East Asian culture (China? That is already a place that has been transformed by barbarians and communism).