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In page Zhou dynasty:

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China's first projects of hydraulic engineering were initiated during the Zhou dynasty, ultimately as a means to aid agricultural irrigation. Sunshu Ao, the Chancellor of Wei who served King Zhuang of Chu, dammed a river to create an enormous irrigation reservoir in modern-day northern Anhui province. For this, Sunshu is credited as China's first hydraulic engineer. The later Wei statesman Ximen Bao, who served Marquis Wen of Wei (445–396 BC), was the first hydraulic engineer of China to have created a large irrigation canal system. As the main focus of his grandiose project, his canal work eventually diverted the waters of the entire Zhang River to a spot further up the Yellow River.[citation needed]