Core Viewpoint - The article highlights the significant progress of the "15th Five-Year" major project, the Yangtze River High-Speed Railway, which will connect major urban clusters from Shanghai to Chengdu over a distance of approximately 2000 kilometers [1]. Group 1 - The Yangtze River High-Speed Railway is a key infrastructure project aimed at enhancing connectivity between major cities [1]. - The project features the world's largest diameter high-speed railway shield tunneling machine, which is capable of constructing a 14-kilometer underwater tunnel beneath the Yangtze River [3].