Photo taken on May 17, 2013 shows a worker maintaining Nuomi dam in Huajiakou section of China's Grand Canal, in Anling township of Jingxian county, North China'sHebeiprovince. The dam, a turning point on the canal, used to breach a lot before it was reinforced in 1911. It was listed as a heritage point of China's Grand Canal in 2013. [Photo/Xinhua]
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