Canal Function of the Ruins of the Grand Canal Wharf in Sui and Tang Dynasties in Liu Zi

Yang Di has dug the North-South Canal Tongji Canal, Jiangnan Canal and Yongji Canal. It connects the five major water systems of the sea, the river, the Huaihe River and the Qiantang River, with a total length of more than 5,000 miles. It is the earliest, longest and most magnificent artificial canal in the world. Song Xinchao, director of the Archaeological Department of National Cultural Heritage Administration, proudly said when talking about the Sui and Tang Grand Canal: "China has two major artificial projects: one is the Great Wall, the defense project of Qin Shihuang; Second, the Grand Canal, a traffic project in Yang Di, is also an artificial canal project unmatched by any country. It is a symbol of the Chinese nation and should be included in the world cultural heritage. "

The Grand Canal is the traffic artery of Sui, Tang and Song Dynasties. Tongji Canal connects the Yellow River and Huaihe River, transporting rich products and grain from Jiangnan and Jianghuai areas to the north, and solving the supply of the capital and the army. This can't be solved by land transportation by human carriage. The Grand Canal has also promoted the prosperity of towns on both sides of the strait, promoted the great development of commerce, foreign trade and tourism throughout the country, and formed the Canal Economic Belt. During the Tang and Song Dynasties, China's water transportation was developed, and it was the Grand Canal that ensured the supply of materials and reached the peak of China's history. No wonder Zhang Jiali, director of Anhui Cultural Relics Bureau, said, "The Grand Canal of Sui and Tang Dynasties was the lifeblood of the dynasty at that time, and its outstanding role surpassed that of the Silk Road".