Tourists visit a scenic area in Zhangjiajie, Central China's Hunan province, Dec 17, 2016. The tourism in Zhangjiajie city is improved while the local environment is well preserved. [Photo/Xinhua]
Photo taken on Oct. 22, 2016 shows the scenery of Yangjiajie Mountain in Zhangjiajie, Central China's Hunan province, Dec 17, 2016. [Photo/Xinhua]
A staff member waves to tourists at the Baofeng Lake scenic area in Zhangjiajie, Central China's Hunan province, Dec 17, 2016. [Photo/Xinhua]
Tourists visit the Huanglong Cave scenic area in Zhangjiajie, Central China's Hunan province, Dec 17, 2016. [Photo/Xinhua]
