File:Farmers of forty centuries - Fields recently flooded with the Chinese foot-power chain pump.jpg
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![File:Farmers of forty centuries - Fields recently flooded with the Chinese foot-power chain pump.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/2/29/Farmers_of_forty_centuries_-_Fields_recently_flooded_with_the_Chinese_foot-power_chain_pump.jpg/776px-Farmers_of_forty_centuries_-_Fields_recently_flooded_with_the_Chinese_foot-power_chain_pump.jpg?20191213175523)
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