Well-known Korean filmmaker Yoo Ha praised the looks of leading actors of his film “Gangnam 1970” -- Lee Min ho, Kim Lae-won and Seolhyun -- at an online live talk hosted by Naver on Wednesday. “Lee Min-ho, Kim Rae-won and Seolhyun’s pure faces are just like food free of chemical additives.” Yoo said.“When I first decided to cast Seolhyun as a lead actor in my film, I was skeptical about whether she could become a good actor but now I admit that she is the perfect fit for the role with her pure and innocent look.”“Gangnam 1970” will be released nationwide on Jan. 21. By Hong Hye-jin ()