Bian River Grain Transport System

Timeline

1. 1001–1002Bian River entrance to the capital · HenanAfter the spring grain transport opened the canal each year, transport vessels from the Jianghuai circuits carried rice north along the Bian River, entering the city at western Kaifeng to unload grain into capital granaries; by the early Zhenzong reign an annual transport of over six million shi had become standard, provisioning the capital's troops and civilians and the court's needs.
2. 1004–1006Along the Bian River · HenanTransport commissioners of the Three Offices coordinated grain collection and vessel dispatch across circuits, with convoy-supervision and inspection officials stationed along the river to urge transport, while dredging channels and repairing weirs and locks to counter the silting of the Bian canal by Yellow River sediment and keep grain transport flowing.
3. 1008–1010Bianzhou section of the Bian River · HenanOfficial grain vessels and private merchant ships sailed the Bian River together; grain transport spurred commercial development in towns such as Bianzhou and Zhengzhou along the route, with grain, silk, porcelain, and other goods carried north into the capital, forming a complementary pattern of state-run grain transport and private water shipping.