中国博士后遭美方执法人员盘问后自杀，外交部表态

Core Viewpoint - The article discusses the tragic suicide of a Chinese postdoctoral researcher following an interrogation by U.S. law enforcement, highlighting concerns over the treatment of Chinese students and scholars in the U.S. [1] Group 1 - The Chinese government expressed deep sorrow over the incident and has lodged a formal protest with the U.S. [1] - The Chinese Embassy in the U.S. has reached out to the victim's family to provide assistance [1] - The Chinese government criticized the U.S. for broadening the concept of national security, which has led to unwarranted scrutiny of Chinese students and scholars, infringing on their legitimate rights [1] Group 2 - The Chinese government urged the U.S. to thoroughly investigate the case and provide a responsible explanation to the victim's family and China [1] - There is a call for the U.S. to cease discriminatory law enforcement against Chinese students and scholars, as well as to stop fabricating wrongful cases [1] - The Chinese government reaffirmed its commitment to taking necessary measures to protect the legitimate rights of its citizens [1]