ZHANGJIAJIE: Members of performing group Houle Douce practice their instruments on tightropes ahead of a performance, at the Tianmen Mountain National Park in Zhangjiajie, Hunan province, China May 23, 2018. REUTERS
ZHANGJIAJIE: Members of performing group Houle Douce practice their instruments on tightropes ahead of a performance, at the Tianmen Mountain National Park in Zhangjiajie, Hunan province, China May 23, 2018. REUTERS