Champion Dario Cologna (C) of Switzerland, second-placed Simen Hegstad Krueger (L) of Norway and third-placed Olympic athlete from Russia Denis Spitsov pose during venue ceremony of men's 15km free event of cross country skiing at 2018 PyeongChang Winter Olympic Games at Alpensia Cross-Country Centre, PyeongChang, South Korea, Feb. 16, 2018. (Xinhua/Han Yan)