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udn網路城邦
“紅旗渠”(轉播)
2023/03/21 18:13
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During the late 1950s and early 1960s, with determined resolve, Mainland China used primitive tools and much less sophisticated machines to build a magnificent irrigation channel out of mountainous ravines in Henan, the Red Flag Ditch.  Following is the story of this "modern" hydraulic engineering: 

https://www.ixigua.com/7210323693774635579?logTag=dade1611bb1362496849 

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