Kelsey Serwa of Canada (Front) celebrates after crossing the finishing line during the ladies' ski cross of freestyle skiing at the 2018 PyeongChang Winter Olympic Games, at Phoenix Snow Park, in PyeongChang, South Korea, on Feb. 23, 2018. Kelsey Serwa of Canada won the gold medal in the ladies' ski cross final. (Xinhua/Lui Siu Wai)