Dario Cologna of Switzerland celebrates after finishing the men's 15km free of cross-country skiing at the 2018 PyeongChang Winter Olympic Games, at Alpensia Cross-Country Skiing Centre, PyeongChang, South Korea, on Feb. 16, 2018. Dario Cologna won the gold medal in the time of 33:43.9. (Xinhua/Han Yan)