China's Ba Dexin (2nd L, Back) and Wang Rui (3rd L, Back) stand watching during the curling mixed doubles round robin session of the PyeongChang 2018 Winter Olympic Games between China and Switzerland at the Gangneung Curling Centre in Gangneung, South Korea, on Feb. 8, 2018. China lost 5-7. (Xinhua/Ma Ping)