在清华园，送别杨振宁

Core Points - Renowned physicist and Nobel laureate Yang Zhenning passed away on October 18 at the age of 103, prompting widespread mourning and remembrance from the academic community and the public [3][6][10] - Yang Zhenning spent nearly 30 years at Tsinghua University, where he made significant contributions to physics education and research, particularly in areas such as cold atom physics and condensed matter physics [6][13] - A memorial room was established at Tsinghua University from October 18 to 24, allowing people to pay their respects, with hundreds lining up to honor his legacy [4][12] Contributions to Education and Research - Yang Zhenning was instrumental in the establishment of the Tsinghua University Advanced Research Center in 1997 and served as an honorary director, later becoming a professor [6][8] - He continued to teach and mentor students well into his eighties, significantly impacting the development of physics education in China [6][10] - His contributions to the field include 13 significant achievements in various areas of physics, with the violation of parity conservation and Yang-Mills theory being among his most recognized works [13] Public Remembrance - Many former students and colleagues attended the memorial, reflecting on Yang's influence and contributions to their academic journeys [6][8] - The memorial attracted a diverse crowd, including young students and teachers, indicating his lasting impact on generations of physicists [12][14] - Tsinghua University and its affiliated departments displayed black-and-white tributes on their websites, symbolizing collective mourning for Yang Zhenning [13]