China Held US Seismologist Chen Youlin for 600 Days on Espionage Charges
Updated
Updated · bbc.co.uk · Jul 15
China Held US Seismologist Chen Youlin for 600 Days on Espionage Charges
3 articles · Updated · bbc.co.uk · Jul 15
Summary
Chen Youlin, a 54-year-old US seismologist, was arrested in Beijing in November 2024 and has now been held for nearly two years, with his family going public after seeing no sign of release.
More than 100 interrogations focused on Chen's nuclear-test monitoring work, his wife said, adding he was denied access to a lawyer for the first 13 months and has not spoken with her for over 600 days.
Global Reach said US officials suspect the case is tied to China's alleged covert nuclear testing and to Chen's expertise in US seismic detection methods, which could help Beijing develop countermeasures; China denied any wrongful detention.
Health concerns have added pressure on the case: advocacy groups said Chen has diabetes, high blood pressure and high cholesterol, while Senator Edward Markey warned the detention could chill US-China academic collaboration.
The disclosure comes a month after China confirmed the arrest of another US-linked scholar, Min Zin, underscoring rising national-security risks for foreign researchers working on sensitive topics.
With a US-China summit looming, will a detained scientist become a bargaining chip for nuclear secrets?
His research was public, yet China calls him a spy. What did this American seismologist really know?
The Detention of Youlin Chen: Humanitarian, Legal, and Geopolitical Implications of China’s State Secrets Crackdown
Overview
Youlin Chen remains in detention in China, with authorities insisting his arrest is handled under domestic law. His wife, Rong Yufang, has publicly refuted the espionage allegations, emphasizing that his work was open and collaborative. A U.S. source has called the detention 'unjustifiable,' and the U.S. administration is actively working for his release. President Donald Trump is expected to raise Chen's case directly with President Xi Jinping during an upcoming meeting in Washington, making this a key diplomatic issue. The case highlights ongoing humanitarian concerns and the complex U.S.-China relationship.