Zhangjiajie Blue Sky rescue team call on tourists to protect environment in Hunan
A member of Zhangjiajie Blue Sky rescue team practices cable descent at Huangshizhai scenic spot in Zhangjiajie, central China's Hunan Province, Oct. 21, 2020. The Blue Sky rescue team, formed by local volunteers, often pick garbage during their practice at the scenic area, calling on tourists here to protect the environment. (Xinhua/Zhao Zhongzhi)
