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A farmer airs sweet potato starch jelly in Dongzheng Village, Boxing County, east China's Shandong Province, Nov. 13, 2018. (Xinhua/Chen Bin)
 
 
A farmer airs sweet potato starch jelly in Dongzheng Village, Boxing County, east China's Shandong Province, Nov. 13, 2018. (Xinhua/Chen Bin)