Group 1: Hydropower and Energy Storage - The Zhejiang Tiantai Pumped Storage Power Station, a key project under China's 14th Five-Year Plan, has successfully completed the rotor hoisting of its first unit, marking the entry into the assembly phase for the largest single-unit pumped storage generator in the country with a capacity of 425 megawatts [1][3] - The power station consists of upper and lower reservoirs, a water conveyance system, and an underground powerhouse, with a total installed capacity of 1,700 megawatts, expected to provide 1.7 billion kilowatt-hours of clean energy annually, equivalent to the electricity needs of 1.6 million people [7][5] - The project employs advanced technologies such as 3D printing, CNC machining, and welding, representing a significant achievement in the high-end development of China's pumped storage units [3] Group 2: Infrastructure Development - The Haitai Yangtze River Tunnel, currently under construction, is the world's longest underwater road tunnel at 11.185 kilometers, with a shield tunnel section of 9,315 meters, connecting Jiangsu Nantong and Suzhou [8][10] - The construction is being carried out by over 300 workers, utilizing the "Jianghai" shield machine, which has a diameter of 16.64 meters and is equipped with advanced technologies for efficient tunneling [10][12] - The tunnel is designed with a dual six-lane configuration and a speed limit of 100 kilometers per hour, expected to significantly enhance connectivity in the Yangtze River Delta region upon completion in 2028 [16] Group 3: Waterway Infrastructure - The Changjiang Navigation Channel Improvement Project in Jiangxi is progressing with over 100 workers on-site, focusing on enhancing the waterway's capacity to over 15 million tons annually [17][19] - The project utilizes smart management and technological innovations, including Building Information Modeling (BIM), which has optimized design and saved over 100 million yuan in investment [21] - Safety measures include the installation of 22 4K HD cameras for real-time monitoring, contributing to a comprehensive safety management system [23]