This aerial photo taken on April 6, 2023 shows tourists visiting Sayram Lake in Bortala Mongolian Autonomous Prefecture, northwest China\’s Xinjiang Uygur Autonomous Region. The frozen Sayram Lake in X
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Ancient irrigation, flood control system unearthed in central China
WUHAN, Feb. 23 (Xinhua) — A 5,000-year-old city in central China was found to have a water conservancy system that effectively utilized rivers for irrigation and prevented flooding with the use of da