Group 1 - Zhang Chuhan, a prominent figure in water conservancy and hydropower engineering, has made significant contributions to major projects in China, including the Three Gorges Dam and the South-to-North Water Diversion Project [2][34]. - He has been instrumental in developing seismic design theories for high arch dams, which are now widely recognized and applied in various engineering projects [21][34]. - Zhang's work has been pivotal in ensuring the safety and effectiveness of high dam constructions in seismically active regions of China, addressing challenges posed by natural disasters [21][28]. Group 2 - Zhang Chuhan's educational background includes studying at Tsinghua University, where he excelled in mathematics and physics, laying a strong foundation for his future work [9][10]. - He was among the first group of scholars to study abroad after the reform and opening-up, gaining exposure to advanced water management technologies [12][34]. - Throughout his career, Zhang has emphasized the importance of innovation and continuous learning, adapting to new technologies such as artificial intelligence in his research [33][34]. Group 3 - At 92 years old, Zhang continues to actively participate in research and education, demonstrating a commitment to mentoring the next generation of engineers [35][36]. - His contributions to national water safety governance, particularly in projects like the Xiong'an New Area, highlight his ongoing influence in the field [29][34]. - Zhang's philosophy of "work keeps one young" reflects his dedication to lifelong learning and engagement with contemporary issues in water management [35].

Group 1 - The construction of major engineering projects is being accelerated across various regions and sectors, with significant progress reported in the Yanhan-Jiwei Phase II project, where over 3 kilometers of tunnel excavation has been completed, accounting for one-third of the total project volume [1][2] - The Yanhan-Jiwei Phase II project, once completed, will annually transfer 1.5 billion cubic meters of water from the Han River, benefiting over 14 million people [2] - At the Nanjing North Station construction site, the foundation work has been completed, and efforts are being made to advance the overall schedule before the rainy season [2][3] Group 2 - The Nanjing North Station will facilitate a high-speed rail connection, enabling travel between core cities in the Yangtze River Delta within two hours [3] - The construction of the Henan Wuyue Pumped Storage Power Station is progressing well, with the upper reservoir dam completed to 100% of the design volume, supported by advanced smart construction systems [3] - As of the end of April, the Wuyue Pumped Storage Power Station has achieved over 1.5 million kilowatt-hours of renewable energy consumption, with the second quarter identified as a critical period for both power generation and project construction [3]