Nuclear physicist Liu Chang left the United States and returned to China to work at his alma mater, Peking University.

According to reports,Nuclear physicist Liu Chang recently left Princeton University, where he had worked for many years, and returned to his alma mater, Peking University. This move once again raised concerns about the wave of Chinese scientists returning to China.Public information shows that Liu Chang received a bachelor's degree from the School of Physics of Peking University in July 2011 and a doctorate in plasma physics from the Department of Astrophysics at Princeton University in February 2017.

From March 2017 to January 2025, he engaged in research at the Princeton Plasma Physics Laboratory.In February 2025, he officially joined the School of Physics at Peking University as an assistant professor at the Institute of Heavy Ion Physics.

Liu Chang's main research fields are plasma physics and nuclear fusion, focusing on the physical problems of escaped electrons and other high-energy particles in magnetic confinement fusion devices.Including the rupture phenomenon in tokamak devices, the generation and dissipation mechanisms of escaped electrons, and the development of high-performance numerical simulation codes.

The Institute of Heavy Ion Physics, School of Physics, Peking University, stated that Liu Chang plans to continue to carry out cutting-edge and applied research in plasma physics and design reliable solutions for mitigating rupture and escaped electrons for next-generation nuclear fusion devices.

In recent years, more and more Chinese-American scientists have chosen to leave the United States and return to China to continue their scientific research careers. Whether it is Chen Jing in the computer field, Hu Yijuan in biostatistics, Wang Zhonglin in nanotechnology, or Sun Shaocong, a cancer research expert, their return not only marks a turning point in their personal careers, but also highlights China's rise in global technology competition.