High Middle Ages · East Asia · Technology

1002

Song court sponsors massive canal maintenance

1002

Emperor Zhenzong ordered a comprehensive dredging and repair of the Grand Canal system, deploying tens of thousands of laborers to keep the vital artery between the Yangtze rice lands and the northern capital at Kaifeng flowing. The canal carried over six million shi of grain annually, a logistical achievement that sustained the world's largest city and its million residents.