Why do you seldom see China people in Korea?

Historically, it has always been a servant country. In order to emphasize one's own culture and culture, the China Cultural Movement was first started in the 15th century, and it was the strongest in the park chung-hee era. All Chinese has gradually disappeared in South Korea, and now if there are too many China elements in film and television works, they will be criticized by netizens there. Now it's a joke, the whole universe belongs to Korea, hahaha.