Photo taken on Jan. 14, 2018 shows an aerial view of Alpensia Cross-Country Skiing Centre of Pyeongchang Mountain Cluster for Pyeongchang 2018 Winter Olympic Games in Pyeongchang, South Korea. Alpensia Cross-Country Skiing Centre will hold Cross-Country Skiing and Nordic Combined events during the Games. (Xinhua/Lui Siu Wai)