Korea is proud to have ethnic homogeinity. It is the most overvalued country in the world. They have used softpower like moovies, series, kpop to be fashionable. I wonder why because when you visit Korea you don't feel welcome. I'm not thaï, I'm french I go to Korea frequently for my job and I can say that they don't like foreigners. They are not friendly, they smill the less they can, they are reluctant to talk, to interact or to help you. I don't see any other country like that and I travel a lot.