China's Ba Dexin (Back) and Wang Rui compete during the curling mixed doubles round robin session 5 against Becca Hamilton and Matt Hamilton from the United States at the 2018 PyeongChang Winter Olympic Games at the Gangneung Curling Centre in Gangneung, South Korea, on Feb. 10, 2018. China won 6-4. (Xinhua/Ma Ping)