BEIJING, April 11, 2016 (Xinhua) -- Tourists visit the terraced fields in Jiangling Village of Wuyuan County, east China's Jiangxi Province, March 31, 2015. China has perfected the art of building terraced fields as an effective way to preserve water and soil, and had a long history of terracing the ridges for high-yield cropping. (Xinhua/Wang Song)
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