Sheng Yi, a researcher at the Provincial Academy of Social Sciences, believes that this is the need to make up for each other. Up to now, the operating mileage of Sichuan high-speed railway is more than 1,2 kilometers, with an average mileage of only .15 kilometers per 1, people, which is far behind its neighbors such as Guangxi, Guizhou and Yunnan. Sichuan is a populous province with a great demand for personnel, logistics and information flow. High-speed railway will bring rapid flow of various streams. Therefore, in order to strengthen opening up and cooperation, Sichuan must make up for the shortcomings of high-speed rail, build several important high-speed rail and build a fast track to the outside world. As an important part of the high-speed railway along the Yangtze River, the Chengda-Wanzhou high-speed railway is such a landmark project. When completed, it will form a high-speed railway passage from Chengdu to Sichuan, which is of great significance to the core cities. According to the relevant person in charge of the Provincial Development and Reform Commission, after the completion of Chengda High-speed Railway, Zhengzhou-Wanzhou High-speed Railway will be connected at Wanzhou Hub, forming a large passage to the east, and Chongqing Western High-speed Railway will be connected at Dazhou, forming a large passage to the north. The importance of the formation of a high-speed railway and two major passages is self-evident.

From the passage, the radiation effect of Chengdu-Dawan high-speed railway is very great. From the perspective of regional development and resource endowment, the most important economic direction of China is east-west. Dai Bin, president of the Sichuan Regional Economic Research Association and director of the Regional Economic and Urban Management Research Center of Southwest Jiaotong University, believes that for inland Sichuan, strengthening economic and social ties with the eastern coastal areas and the central region is an important strategic path to implement the four expansions and global opening. Riverside channel connects East China, Central China and Southwest China, and connects the Yangtze River Delta, the middle reaches of the Yangtze River, Chengdu and Chongqing and other urban agglomerations. As an important part of the channel along the Yangtze River, Chengda High-speed Railway is the most important eastward land strategic channel in Sichuan. Especially in the context of promoting the construction of the twin-city economic circle in Chengdu-Chongqing area, it is the most convenient land passage connecting Chengdu-Chongqing and the Yangtze River Delta Avenue.

The Yangtze River high-speed railway passage highly praised by many experts refers to the high-speed railway passage from Chengdu and Chongqing to Shanghai. The National Yangtze River Office issued the Implementation Plan for Promoting the Construction of High-speed Railway Passage in the Yangtze River Economic Belt, and determined that the Yangtze River High-speed Railway Passage consists of Chengdu, Wanzhou, Yichang, Jingmen, Wuhan, Hefei, Nanjing and Shanghai, with a design speed of 35 km/h.

this is a horizontal line from east to west in the national high-speed rail network starting from Chengdu and ending in Shanghai. Bai Xiaoyong, the chief designer of Chengdu-Dawan high-speed railway, said that according to Sichuan Online, the existing east-west cross-line Shanghai-Wuhan-Chengdu passage is composed of several railways, with long mileage and uneven running speed, and the speed of some sections can only reach 16 kilometers per hour. Therefore, China has drawn a new riverside waterway with a speed of 35 kilometers per hour, hoping to realize the rapid connection between Chengdu-Chongqing area and the central and eastern core cities through high-speed railway. The Chengdu-Dawan high-speed railway is the first major project under construction since the release of the Implementation Plan for Promoting the Construction of High-speed Railway Passage in the Yangtze River Economic Belt. Just a few days ago, the State Railway Group and Shanghai, Jiangsu, Anhui, Hubei, Chongqing, Sichuan and other provinces initiated the establishment of the Yangtze River Coastal Railway Group Co., Ltd., and pressed the fast forward button for the construction of the Yangtze River waterway. Bai Xiaoyong said that after all the waterways along the Yangtze River are completed, the time from Chengdu to Shanghai will be shortened to less than seven hours, about half of the current time.