以破局者姿态“趟路子”，长三角这一年探出了哪些新模式？

Economic Overview - In 2024, the GDP of the Yangtze River Delta region surpassed 33 trillion yuan, with a year-on-year growth of 5.5%, accounting for 24.7% of the national total [1] - The number of "trillion-yuan cities" increased to 9, representing one-third of the national total [1] Infrastructure Development - The completion of the Fangting Water Courtyard marks significant progress in cross-regional projects, enhancing transportation and ecological integration [2][3] - The Nanjing North Station, with a total area of approximately 29.67 million square meters, is set to improve the railway hub layout and facilitate economic integration in the region [11] Ecological Cooperation - The Fangting Water Courtyard serves as a model for ecological governance, with a total investment of approximately 52 billion yuan over five years to address pollution and enhance water quality [3] - A cross-regional cooperative governance model has been established, focusing on joint management of water bodies between Shanghai and Jiangsu [3] Technological Innovation - The establishment of the Nantong North High-tech Zone exemplifies cross-regional collaboration in technology innovation, attracting over 300 high-quality tech enterprises [5][7] - A mother fund of no less than 300 million yuan will be set up to support leading industries in the high-tech zone, promoting R&D and commercialization [7] Transportation Connectivity - The Yangtze River Delta's rail network expanded by 667.6 kilometers in 2024, enhancing connectivity and creating a "one-hour friend circle" among cities [12] - The Hai-Tai Yangtze Tunnel, the longest underwater highway tunnel in the world, is expected to significantly reduce travel time between regions upon completion [12]