李政道儿子悼念杨振宁：一位伟大的世界级物理学家

Core Viewpoint - The news reports the passing of renowned physicist Yang Zhenning, a Nobel laureate and academician of the Chinese Academy of Sciences, who died on October 18, 2025, at the age of 103 in Beijing [1]. Group 1 - Yang Zhenning was celebrated as a world-class physicist, and his death has prompted expressions of deep sorrow from colleagues and friends, including Professor Li Zhongqing from Hong Kong University of Science and Technology [1]. - Li Zhongqing reminisced about his childhood visits to Yang Zhenning's home, highlighting the close relationship between their families and the academic collaboration between Yang and Li's father at Princeton University [3]. - The two families shared a strong bond, with their children playing together while the adults discussed academic topics, showcasing Yang's approachable nature [3]. Group 2 - In 1973, Li Zhongqing visited Yang Zhenning after the passing of Yang's father, and despite not having met for over a decade, they quickly rekindled their friendship [4].