Sweden's Charlotte Kalla (L) makes changeover with teammate Ebba Andersson during women's 12.5km mass start event of biathlon at the 2018 PyeongChang Winter Olympic Games at Alpensia Biathlong Centre, PyeongChang, Feb. 17, 2018. Team sweden claimed the second place in a time of 51:26.3. (Xinhua/Ju Huanzong)