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In ancient China, large canals for river transport were established as far back as the Warring States ( 481 – 221 BC ), the longest one of that period being the Hong Gou ( Canal of the Wild Geese ), which according to the ancient historian Sima Qian connected the old states of Song, Zhang, Chen, Cai, Cao, and Wei.

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In ancient China, large canals for river transport were established as far back as the Warring States ( 481-221 BCE ).

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