Korea has always been a vassal state of China in ancient times, and its culture is of course that of China. They can't create their own splendid culture, so they can only learn. Therefore, we can see a lot of China culture in Korean dramas, and many things like China, so don't think that they belong to the Koreans themselves. The previous Korean characters were also variants of Chinese characters, but later they were changed to this way in order to get rid of the influence of China.
didn't you say that Korean characters have changed? The characters used in the past are very similar to Chinese characters, but now I don't know how to make them. Otherwise, why are the names of South Korea and North Korea so similar to those of China people? It is estimated that the lost characters are just like the traditional Chinese characters in China, which is not common, and there are not many people who can write and recognize them.