Answer:
The Grand Canal of Sui and Tang Dynasties formed a road waterway from Jiangnan to Luoyang, the capital city, after the unification of north and south in the Sui Dynasty. With Luoyang as the center, the canal runs from Guangtong Canal in 584 AD to the west to Xi'an, Shaanxi Province, from 603 AD to Yongji Canal from Shandong Linqing north to Hebei Zhuo County, and in 605 AD to the south to the Qingjiang River in Jiangsu The Tongji Canal and Shanyang Du and the Jiangnan Canal connecting Zhenjiang, Jiangsu and Hangzhou, Zhejiang in 610 AD. The Grand Canal of Sui and Tang Dynasties is the longest canal in the history of the world. However, with the passage of time, some sections of the Grand Canal in the Sui Dynasty lost their navigable function, and then the Beijing-Hangzhou Grand Canal built by Kublai Khan, the ancestor of the Yuan Dynasty (only the ancient Hangou, Jiangnan Canal and other sections overlap with the Sui Dynasty Grand Canal) replace.
Step-by-step explanation: