Core Viewpoint - The article commemorates the contributions and achievements of Yu Benshui, a prominent expert in air defense missile technology in China, who passed away at the age of 91 on August 27, 2025. His work significantly advanced China's air defense capabilities and missile technology [1]. Group 1: Contributions to Air Defense Technology - Yu Benshui was a key figure in the development of various air defense missile systems, including ground-to-air and ship-to-air missiles, and played a crucial role in strategic research for advanced defense weapon systems [1]. - He was the chief designer for multiple air defense missile systems and made significant contributions to intercepting low-altitude and maneuvering targets, marking him as a pioneer in the field [1]. - His leadership in the development of the first generation of air defense missiles, from the imitation of the 543 missile to the research and development of the Hongqi-2 missile, was instrumental in overcoming technical challenges related to high-speed and maneuvering target interception [1]. Group 2: Key Achievements and Honors - Yu Benshui received numerous prestigious awards, including the National Science and Technology Progress Award (Special Class and First Class), National Defense Science and Technology Progress First Class Award, and the Aerospace System "Outstanding Contribution Expert" recognition [1]. - He was recognized for his innovative approach in the B610 missile project, which transformed air defense missiles into flight-type ground-to-ground missiles, contributing significantly to the development of related fields [2]. - His research on the "near-quick combat method" has left a lasting impact on China's aerospace and air defense combat history [1].

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]