Group 1 - The Yangtze River Delta (YRD) region, comprising three provinces and one city, accounts for nearly a quarter of China's economic output despite occupying less than 4% of the country's land area [1] - The region's innovation capacity is reflected in its rising regional innovation co-construction index, with total technology expenditure exceeding 250 billion yuan, representing over 25% of national local technology investment [1] - The YRD has a diverse industrial collaboration model, with 26 advanced manufacturing clusters making up nearly one-third of the national total [1][3] Group 2 - The G60 Science and Technology Corridor connects multiple cities, facilitating collaborative innovation across the YRD [2] - Research and development intensity in the region averages 3.77%, with PCT international patent applications accounting for 10.1% of the national total [3] - The YRD is home to 11% of the country's specialized and innovative "little giant" enterprises and 12% of unicorn companies [3] Group 3 - The "Digital Corridor" is emerging along the G50 highway, enhancing digital collaboration and innovation across the YRD [4] - The YRD's cities are collaborating in the integrated circuit industry, leveraging their respective strengths in chip design, manufacturing, and materials [4] Group 4 - The establishment of "flying land" parks demonstrates cross-regional collaboration, with significant industrial cooperation between cities like Nantong and Shanghai [6][7] - The New Suzhou-Chuzhou High-tech Zone has attracted over 300 industrial projects, with 80% coming from the YRD region [9] Group 5 - The Hai-Tai Yangtze River Tunnel, set to be completed by 2028, will significantly reduce travel time across the river, enhancing economic integration in the YRD [11] - The Nanjing metropolitan area is the first officially approved urban agglomeration, showcasing the region's commitment to coordinated development [11][15]