One of China's major rivers, the 1,000-km-long Huaihe River, covering a drainage area of 187,000 square km, flows through the four provinces of Henan, Anhui, Shandong and Jiangsu. In recent years,...
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One of China's major rivers, the 1,000-km-long Huaihe River, covering a drainage area of 187,000 square km, flows through the four provinces of Henan, Anhui, Shandong and Jiangsu. In recent years,...