Chinese women gymnasts attend training program in West Des Moines, U.S.

Chen Yile, a member of China's women gymnastic team, is seen during training at Chow's Gymnastics and Dance Institute in West Des Moines, Iowa, the United States, on Dec. 27, 2017. Four Chinese women gymnasts have attended a 20-day training program in Iowa since Dec. 11. (Xinhua/Yin Bogu)