BEIJING, Aug. 18 (Xinhua) -- Following are news items about China to be covered or pursued by Xinhua on Sunday:
Wire Service:
-- Xinhua Headlines: Scientific surveys valuable for safeguarding ecology on "roof of the world"
-- Across China: Cross-border tourism between China, Russia injects new vitality into NE border cities
-- Across China: From herding to high peaks -- mountaineering reshapes lives on plateau
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