Hanhwa Group chairman Kim Seung-Youn (L) answers a question as SK Group chairman Chey Tae-Won (R) listens during a parliamentary probe into a scandal engulfing President Park Geun-Hye at the National Assembly in Seoul on December 6, 2016. The publicity-shy heads of South Korea's largest conglomerates faced their worst nightmare on December 6, as they were publicly grilled about possible corrupt practises before an audience of millions. REUTERS/Jung Yeon-Je/Pool?