Core Viewpoint - The meeting held in Nanjing emphasized the importance of enhancing the Yangtze River Delta's role as a strategic hub and promoting high-level opening-up [1] Group 1: Economic Development - The Yangtze River Delta aims to build an international first-class business environment [1] - Collaborative efforts will focus on improving logistics efficiency and reducing costs in the region [1] - The integration of the Yangtze River Delta Free Trade Zone will be strengthened [1] Group 2: Infrastructure and Connectivity - The construction of the "Belt and Road" comprehensive service platform will be advanced [1] - The new Eurasian land-sea intermodal transport corridor will be accelerated [1] - Enhancements in the operation quality and efficiency of China-Europe freight trains will be prioritized [1] Group 3: Transportation and Logistics - The "Railway on the Yangtze River Delta" initiative will be deepened [1] - Ongoing projects include the expansion of cross-river passages and inter-provincial road segments [1] - The integration of port resources in the Yangtze River Delta will be expedited to create a world-class airport cluster [1]

Core Points - The Tongyu High-Speed Railway, connecting Nantong in Jiangsu to Ningbo in Zhejiang, has achieved a significant milestone with the successful completion of the Fenhu Tunnel, marking the first tunnel to be completed along the entire line [1][3] - The Fenhu Tunnel spans 3,732 meters, with a shield section of 2,420 meters, and was excavated using a domestically produced large-diameter shield machine named "Hongchuan," which completed the task in just 204 days [3][5] - The new railway line will be 301 kilometers long, with a design speed of 350 kilometers per hour, and is expected to reduce travel time from Nantong to Ningbo to just one hour upon completion [3][7] Engineering and Technology - The "Hongchuan" shield machine utilized advanced real-time monitoring and posture adjustment techniques, successfully navigating various risk sources and achieving precise reception under extremely shallow cover conditions [5] - The machine features a sophisticated mud-water separation system, saving 228.4 tons of water for every meter excavated, and aims for zero leakage, zero discharge, and zero pollution [5] Regional Impact - The completion of the Tongyu High-Speed Railway will enhance connectivity with other major rail lines, such as the Beijing-Shanghai and Shanghai-Kunming High-Speed Rail, playing a crucial role in developing the "Railway Triangle" and improving the regional transportation network [7]