Ming Dynasty Grain Transport Canal System

Timeline

1. c. 1401–1405Qingjiangpu, Huai'an · Huai'anIn the early Yongle reign, the Ming court established grain transport governors and granaries at Huai'an, Linqing, and elsewhere, dredging the canal waterways silted up since the late Yuan and restoring the basic pattern of shipping Jiangnan grain tribute north by canal, laying the foundation for later large-scale dredging.
2. 1411–1415Huitong River · ShandongIn the ninth year of Yongle, Song Li and others were ordered to open the Huitong River, dredging the channel and building locks to regulate water levels, allowing Jiangnan grain transport boats to travel by canal directly to Beijing, completely overcoming the limitations of sea and overland transshipment and marking the maturation of the Ming grain transport canal system.
3. c. 1410–1450Linqing · LinqingFrom the Yongle to the Zhengtong reigns, ship locks, diversion dams, and transshipment granaries were added along the canal, forming warehousing and transshipment nodes at hubs such as Linqing, Dezhou, and Tongzhou, enabling grain boats to pass in stages and be scheduled seasonally, improving the efficiency and reliability of grain transport.
4. c. 1450–1644Tongzhou · TongzhouIn the mid-to-late Ming, the grain transport canal continued to carry grain south to north; though repeatedly repaired due to Yellow River course shifts and channel silting, and though sea transport and exchange shipping were occasionally trialed, the Grand Canal remained the empire's main artery for grain and goods transport until the fall of the Ming.