Italy's Arianna Fontana (L) collides with South Korea's Choi Minjeong during ladies' 500m final of short track speed skating at the Pyeongchang 2018 Winter Olympic Games at Gangneung Ice Arena, Gangneung, South Korea, Feb. 13, 2018. Arianna Fontana claimed the champion in a time of 42.569. (Xinhua/Lan Hongguang)