Chi Chunxue of China competes during ladies' 30km mass start classic of cross-country skiing at the 2018 PyeongChang Winter Olympic Games at Alpensia Cross-Country Skiing Centre, PyeongChang, South Korea, Feb. 25, 2018. Chi Chunxue got the 44th place in a time of 1:42:03.2. (Xinhua/Li Gang)