First, it communicated the east, west, north and south of China, and realized the first real integration and unification in the history of China. In ancient times, long-distance land migration could only rely on horseback riding, ox carts and walking, and it was very difficult and slow to climb mountains and wading. However, human beings have long recognized that water can be used, and it can be crossed by boat or even across the sea, which is fast and efficient, and is often much more convenient than taking dry roads.

Second, dozens of prosperous cities along the river were born at once. There is a river first, then a town. The latter is born of the river and thrives on it. This is a great thing. A big city means that the population is relatively concentrated and talents are gathered, and there are divisions of labor due to needs, such as transportation, handling, tax collection, management, shipbuilding, warehousing, goods distribution, trading, hotels, restaurants, beauty streets, song and dance entertainment, schools, etc. In short, there are more and more institutions. The Grand Canal is the "midwife" of the city, and many children are blessed.

Thirdly, the Grand Canal in Sui Dynasty created three world cities: Yangzhou (including Hangzhou), Xi 'an (including Luoyang and Kaifeng) and Beijing (including Tianjin). Yangzhou is the starting point of the Grand Canal, Xi 'an is the midpoint and Beijing is the destination. The Grand Canal has turned these three points into a large-scale city, a capital city or an economic metropolis, and has become the political center, economic center and cultural center of the whole country, with far-reaching influence.

Fourthly, it brought the culture of the Central Plains to the north and south, and also brought the nomadic culture of the northern grassland and the culture of Yumisan tea village in the south to the Central Plains, realizing the diversification, complementarity and pluralism of Chinese culture.

Fifth, the collusion of several major water systems has promoted the integration and exchanges between ethnic groups and international exchanges between China and foreign countries. The Grand Canal seems to be the link connecting the Silk Road. On the one hand, it links the cultures around the Mediterranean and Central Asia with those in mainland China and radiates them. On the other hand, it links the cultures of the northern minorities with those of the Han nationality in the Central Plains, thus promoting the formation, consolidation and growth of this big family of China people. The excavation of the Grand Canal in Sui Dynasty had a great influence on the cultural exchange between the two countries, which produced fruitful results and far-reaching influence.

Sixth, the Yang Di Grand Canal ushered in the Kaiyuan period of the Tang Dynasty, which laid the foundation for the rise of Tang Wenhua in the world. Although the Sui Dynasty was short-lived, it brought long-term stability and prosperity to the Tang Dynasty. The foundation of the Grand Canal in the Sui Dynasty was well laid, and the policy of the Tang Dynasty was slightly adjusted, with good results, which inadvertently added a glorious stroke to the victory of dialectics.