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/Wu Yongbing)
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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/Wu Yongbing)
