@Raven Actually, it's important to know that there are many Koreans who write Chinese cultivation and many chinese who write Kr myth and modern "system" "regressor", etc stories. It's quite an interesting dynamic.
@Raven The original in the Chinese webcomic was 汉城, which is technically an obsolete name (from twenty years ago) for Seoul. But it could also be a fairly generic name for a fictional city in China (literally just a city of the Han)... I'm guessing the translator wasn't sure and just picked Seoul (but I haven't read the original webnovel)