Both the Hanjia Granary site and the Huiluo Granary site are important official granary sites along the Grand Canal from the Sui and Tang dynasties. The Hanjia Granary was an imperial granary in the imperial city of Luoyang city of the Sui the Tang dynasties, a historical end of the Grand Canal, and is the most intact granary site surviving. Its location and storage capacity and the artefacts unearthed there prove the important association between the Caoyun system of the Grand Canal and supplies provided to the imperial court in the Tang dynasty. The Huiluo Granary was one of the large state granaries along the Grand Canal in the Sui dynasty, having a complete layout and remains, reflecting the scale of the Caoyun system of the Grand Canal and the construction of corresponding state granaries in the Sui dynasty.