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"He has made great contributions to the development of world physics," "He has devoted a lot of effort to the construction of China's large scientific facilities and talent training," "His patriotism is touching"...

On the morning of August 11, a memorial service for Mr. Tsung-Dao Lee was held at the Institute of High Energy Physics, Chinese Academy of Sciences. More than 330 academicians, experts, teachers and students, and people from all walks of life paid tribute to him and fondly recalled his scientific contributions and noble character.

Tsung-Dao Lee, a foreign academician of the Chinese Academy of Sciences, was born in Shanghai on November 24, 1926. His ancestral home is Suzhou, Jiangsu. In 1946, Tsung-Dao Lee went to the United States to study and later engaged in research work in many American universities and research institutions.

In 1956, Tsung-Dao Lee and Chen-Ning Yang jointly proposed the theory that parity is not conserved in weak interactions. The following year, after experimental verification, they jointly won the Nobel Prize in Physics.

"I had just started working at that time, and this sensational event inspired me greatly." Zhang Huanqiao, an academician of the Chinese Academy of Sciences who is over 90 years old, still remembers the situation back then. Since then, he has become more determined to make contributions to the country's scientific research.

Since 1972, Mr. Tsung-Dao Lee has returned to China many times to give lectures and offer suggestions. After the reform and opening up, he has spared no effort to promote the progress of China's scientific education. He facilitated the establishment of the "Junior Class" at the University of Science and Technology of China, promoted the establishment of CUSPEA (China-US Joint physics graduate program), and suggested setting up a postdoctoral mobile station system.

Academician Gao Yuanning, Dean of the School of Physics at Peking University, will never forget that Mr. Tsung-Dao Lee proposed to establish the Beijing Center for Modern Physics and the Center for High Energy Physics at Peking University, and he personally served as the director of the two centers to promote the training of young scholars and international cooperative research in the fields of particle physics, nuclear physics, astrophysics and cosmology.

"From the Sino-foreign exchange activities organized by you, we have acquired cutting-edge knowledge and stimulated scientific research inspiration." Many scientists have benefited greatly and are deeply moved.

The Beijing Electron-Positron Collider was officially launched in April 1983, and the first electron-positron collision was achieved in October 1988. This was another major breakthrough achievement in the field of high technology for China after the successful explosion of atomic bombs and hydrogen bombs and the launch of artificial satellites.

From the selection of physical goals to the determination of accelerator plans, from talent training to project management, Mr. Tsung-Dao Lee played an important role in the construction of the Beijing Electron-Positron Collider.

"We were starting from scratch at the time, which seemed like a fantasy to many people." Academician Wang Yifang, director of the Institute of High Energy Physics of the Chinese Academy of Sciences, said that Mr. Tsung-Dao Lee used his international influence to help solve a large number of difficult problems through various channels and played an important role.

The man has passed away, but his style lives on. Participants expressed that they will carry forward Mr. Tsung-Dao Lee's scientific spirit and patriotism, continue to forge ahead, and make new and greater contributions to the development of China's science and technology and talent training. (Reporters Zhang Quan and Wen Jinghua)