痛悼！今天，送别杨振宁先生

Core Viewpoint - The article commemorates the life and achievements of Yang Zhenning, a renowned physicist and Nobel laureate, who passed away at the age of 103, highlighting his contributions to physics and his impact on Chinese science and education [1][28]. Group 1: Early Life and Education - Yang Zhenning was born in 1922 in Hefei, Anhui, and developed an early interest in mathematics and physics, inspired by his father's academic background and a book he read in middle school [1][3]. - He attended Southwest Associated University during the Second Sino-Japanese War, where he excelled academically, achieving top scores in various subjects [3][4]. Group 2: Major Scientific Contributions - Yang Zhenning, along with Li Zhengdao, proposed the concept of parity violation in weak interactions in 1956, which was later experimentally confirmed, earning them the Nobel Prize in Physics in 1957 [5][8]. - He co-developed the Yang-Mills theory in 1954, which laid the groundwork for the standard model of particle physics, and discovered the Yang-Baxter equation in 1967, influencing statistical physics and quantum theory [8][25]. Group 3: Contributions to China - After returning to China in 1971, Yang Zhenning played a significant role in promoting scientific research and policy, advising on the importance of basic science and contributing to major scientific projects [10][11]. - He was instrumental in establishing the Tsinghua University Institute for Advanced Study and dedicated efforts to fundraise and support academic development at the university [14][27]. Group 4: Legacy and Recognition - Yang Zhenning's contributions to various fields of physics have had a profound impact, leading to the naming of an asteroid after him, and he is celebrated as one of the greatest physicists of the 20th century [25][27]. - His life is characterized by a commitment to education and science, bridging Eastern and Western cultures, and he is remembered for his humility and dedication to his homeland [27][28].