There has historically been a lot of cultural exchange between China and the various other East Asian states: https://en.wikipedia.org/wiki/East_Asian_cultural_sphere

So part of this would have likely involved dresses and other form of clothing. I don't know much about specifically Korean-Chinese relations, but with Japan for example, they imported in the writing system, certain religious practices, and it's theorized that the katana is descended from a type of Dao sword imported from China.