CHANGSHA, May 6 (Xinhua) — Zhangjiajie, a renowned tourist city in central China\’s Hunan Province, launched a mobile first-aid system in the core part of the Wulingyuan scenic area on the World Natur
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CHANGSHA, May 6 (Xinhua) — Zhangjiajie, a renowned tourist city in central China\’s Hunan Province, launched a mobile first-aid system in the core part of the Wulingyuan scenic area on the World Natur