The Grand Canal of the Sui (581 - 618) and Tang (618 - 907) dynasties not only served as a vital artery for transportation, economic exchange, and cultural interaction between the north and south but also functioned as the "lifeline" of the Sui Dynasty. As an essential grain transport river, it played a crucial role in supplying food to the capital, Luoyang.

During the Sui and Tang periods, the Huailuo Granary and Hanjia Granary were the largest granaries in China and were among the most important facilities associated with the Grand Canal. These granaries ensured a steady flow of grain from various regions to the capital, providing assurance to the emperor, officials, and citizens alike.

Editor: Zhong Xinyi