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In page Grand Canal (China):

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The Grand Canal played a major role during Mao Zedong's Great Leap Forward as it provided an efficient way to transport grain.[citation needed] It was further refurbished following Deng Xiaoping's Reform and Opening Up, with improving economic conditions leading to greater infrastructure investment. The economic importance of the canal will likely continue. The provincial governments of Shandong, Jiangsu, and Zhejiang undertook dredging intended to increase shipping capacity by 40 percent by 2012.[citation needed] The central government has also made the main route of the Grand Canal the eastern path of the South-North Water Diversion Project, using enormous pumping stations to redirect water from the Yangtze Delta to the drier north.