Nana Takagi wins gold as speed skating mass start event makes Winter Olympics debut

Lee Seung-Hoon (L) of South Korea celebrates victory after men's mass start event of speed skating at the 2018 PyeongChang Winter Olympic Games at Gangneung Oval, PyeongChang, Feb. 24, 2018. Lee Seung-Hoon claimed gold medal with 60 points. (Xinhua/Han Yan)