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

Guan Chenchen(L) and Li Qi, members of China's women gymnastic team, are 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 since Dec. 11. (Xinhua/Yin Bogu)