After the construction of a water conservancy project in ancient China, the region was "flooded and droughted without famine, and there were no drought years, so the world was called the Heavenly Palace".

After the construction of a water conservancy project in ancient China, the region was "flooded and droughted without famine, and there were no drought years, so the world was called the Heavenly Palace". Who was the founder of this project?

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