Which Chinese emperor ordered the construction of the Grand Canal?

Emperor Yang of Sui ordered the major construction that completed the Grand Canal. He ruled from 604 to 618 and used the waterway to connect his northern political centers with the prosperous agricultural and commercial regions of the Yangtze basin.

Beginning in 605, his government excavated and linked major sections, including the Tongji Canal between Luoyang and the Yellow River, the Han Canal toward the Yangtze, and later the Yongji Canal toward the north. The resulting network improved the movement of grain, soldiers, officials, and building materials across the empire. Luoyang’s role as a capital made reliable transport especially important.

The wording can cause a historical mix-up: Emperor Yang did not invent every section of the canal. Earlier states and dynasties had already dug important waterways, and later rulers repeatedly repaired or rerouted them. Emperor Yang’s distinctive role was ordering the Sui expansion and integration that produced the Grand Canal in its recognizable imperial form. The project’s enormous labor demands also contributed to popular unrest and the Sui dynasty’s collapse.