中国博士后在遭美方约谈盘问后自杀，中方表态

Core Viewpoint - The article discusses the tragic incident of a Chinese postdoctoral researcher who committed suicide after being questioned by U.S. law enforcement, highlighting the negative impact of U.S. policies on Chinese students and scholars in the U.S. [2] Group 1 - The Chinese government expressed deep sorrow over the incident and has formally lodged a serious protest with the U.S. [2] - The Chinese embassy in the U.S. has reached out to the victim's family to provide assistance and support [2] - 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 [2] 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 the Chinese side [2] - There is a call for the U.S. to cease discriminatory law enforcement against Chinese scholars and students, as well as to stop fabricating wrongful cases [2] - The Chinese government affirmed its commitment to taking necessary measures to protect the legitimate rights of its citizens [2]