Song Court Debates Water Conservancy and Hydraulic Engineering

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As recurring floods along the Yellow River devastated northern provinces, Song officials intensified debates over hydraulic engineering. Proposals ranged from reinforcing existing dikes to diverting the river into new channels - engineering feats that required mobilizing hundreds of thousands of corvée laborers. The debates foreshadowed the activist state philosophy that Wang Anshi would soon champion, in which government intervention in nature and markets was not just permissible but morally required.