On-screen siblings, Park Hye Su & Moon Joowon. Credits: ONE On October 10, the main cast of the recent Korean hit drama The Gang Doctor, Moon Joo Won and Park Hye Su, met up with the media for an exclusive press conference prior to their free public event – Gang Doctor Meet & Greet in … More Moon Joo Won reveals the role Kim Taehyun changed his view of never doing medical dramas again