Group 1 - The article announces the passing of Yu Benshui, a prominent figure in China's aerospace defense sector, who died on August 27, 2025, at the age of 91 due to illness [1] - Yu Benshui was a significant expert in air defense missile technology, having led the development of various missile systems and contributed to strategic research in advanced defense weapon systems [3][4] - He received numerous prestigious awards, including the National Science and Technology Progress Award (Special Class and First Class), National Defense Science and Technology Progress Award, and the Aerospace System "Outstanding Contribution Expert" recognition [3] Group 2 - Yu Benshui was a pioneer in intercepting low-altitude and ultra-low-altitude target missiles, contributing to the development of China's first-generation air defense missiles and the design of the Hongqi-2 missile [4] - He played a crucial role in overcoming key technologies related to rapid response and high integration missile design, achieving world-class standards in intercepting high-speed and maneuvering targets [4] - As the chief designer of the field air defense missile weapon system, he led the formulation of plans and technical breakthroughs, including the innovative transformation of the B610 missile from an air defense missile to a ground-to-ground missile [4]

Core Points - The news reports the passing of Yu Benshui, a prominent expert in air defense missile technology in China, who died on August 27, 2025, at the age of 91 [1] - Yu Benshui was a member of the Chinese Academy of Engineering and served as a senior consultant for China Aerospace Science and Industry Corporation [1][2] - He made significant contributions to the development of various air defense missile systems and was recognized with numerous national awards for his work [2][3] Contributions to Air Defense Technology - Yu Benshui was a pioneer in intercepting low-altitude and ultra-low-altitude targets, as well as coastal target missiles and army field air defense missiles [3][4] - He played a crucial role in the development of China's first-generation air defense missiles, contributing to key technologies for intercepting high-speed and maneuvering targets [4] - His leadership in the research of the "near-quick combat method" left a lasting impact on China's aerospace and air defense history [4] - Yu was instrumental in the development of the second-generation air defense missile systems, achieving world-class standards in rapid response and high-integration missile design [4]