US seismologist Youlin Chen remains detained in China
Family urges Trump to press Xi ahead of expected US visit, consular access continues without case details
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Dr. Yufang Rong and her husband Dr. Youlin Chen, an American seismologist held for nearly two years by China, pose together at Emerald Lake, Yoho National Park, British Columbia, Canada (Reuters)
Reuters
**Youlin Chen remains held in China as his family seeks White House help**
More than 600 days after American seismologist Youlin Chen was detained in China, his wife has gone public with an appeal for the Trump administration to secure his release, according to The Independent. Chen has been held for nearly two years and faces an espionage charge, a case his family says shows no sign of moving toward resolution.
The timing is not subtle. Chen’s relatives began speaking out as Chinese President Xi Jinping is expected to visit the United States in the coming months, and after President Donald Trump raised Chen’s case directly with Xi during a meeting in Beijing in May, The Independent reports. The family says Chinese officials have not acted on what they understood to be Xi’s commitment to Trump, and they now want the case treated as leverage in the next round of high-level talks rather than a quiet consular matter.
Behind the personal plea sits a familiar dispute over technical knowledge. Global Reach, a Washington-based nonprofit that assists Americans it says are wrongly detained abroad, told The Independent that Chen’s arrest is likely connected to his past work as a U.S. government contractor and to his seismological expertise. The group suggested Chinese officials may be trying to learn about U.S. methods for detecting nuclear tests using seismic data—an area where scientific collaboration and national security overlap, and where even routine exchanges can be reinterpreted as intelligence collection.
The formal channels appear deliberately narrow. U.S. Embassy staff have been allowed to visit Chen multiple times, but are not permitted to discuss the specifics of his case with him, The Independent reports. That constraint leaves the family with little visibility into evidence, procedure, or timeline, and turns the case into a question of political bargaining rather than legal adjudication. In March, Secretary of State Marco Rubio designated Chen as wrongfully detained, a label that signals a high-priority case inside the U.S. government.
The White House has framed its role in terms of outcomes rather than process. A spokesperson said Trump wants every American detained abroad to return home and has reunited more than 100 individuals with their families since taking office, according to The Independent. Chen’s wife, Yufang Rong, said Trump has taken a personal interest in the case.
Chen was detained in November 2024 during a personal trip to Beijing to visit his parents, The Independent reports. His wife says she has not been able to speak with him for more than 600 days.