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introducing the legendary pi-shi-hang water control project in anhui, which spans four cities and seventeen counties in anhui and henan provinces. initiated in 1958 and completed after 14 years, this significant achievement in huai river control has provided irrigation to 12.7 million mu of land, accounting for 1/6 of the province's arable land and contributing to local economic and social development. source: anhuinews.com
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