Dominique Ruegg (L) of Switzerland vies for the puck with Park Jongah (R) of the unified team of the Democratic People's Republic of Korea (DPRK) and South Korea during their preliminary match of women's ice hockey at the Pyeongchang 2018 Winter Olympic Games at the Kwandong Hockey Centre in Gangneung, South Korea, on Feb. 10, 2018. (Xinhua/Wang Song)