Family says US seismologist has been detained in China for nearly 2 years with no trial

Nearly two years have passed since China-born American seismologist Youlin Chen was detained without trial in China, and his family has finally broken their silence to push for his release ahead of a much-anticipated meeting between Chinese President Xi Jinping and U.S. President Donald Trump in Washington this September. The revelation comes from Global Reach, a Washington-based non-profit that supports families of Americans wrongfully held overseas and has been advising Chen’s relatives through their ordeal.

Chen, a Boston-based researcher who previously worked as a U.S. government contractor for both the State Department and the U.S. Air Force Research Laboratory, was taken into custody by Chinese state security agents in November 2024 during a personal trip to Beijing to visit his aging parents. Global Reach says Chinese authorities have charged the seismologist with espionage, a charge the group argues is unfounded. Much of Chen’s professional work focused on collaborative seismological data analysis with Chinese research counterparts, the organization confirmed.

Global Reach officials believe Chen’s arbitrary detention is likely a deliberate attempt by Chinese security officials to obtain sensitive information about U.S. methods for detecting nuclear tests via seismic monitoring. While U.S. Embassy consular staff have been granted limited access to visit Chen multiple times since his detention, they have not been permitted to discuss the details of his case with him, and Chen has remained cut off from direct communication with his family.

Chen’s wife Yufang Rong released her first public statement this week, saying she has not spoken to her husband in more than 600 days and lives in constant worry about his physical health and overall well-being. Rong noted that President Trump personally raised Chen’s case during his meeting with President Xi in Beijing last May, and expressed confidence that the Trump administration will deliver on its commitment to bring her husband home. To date, the administration has secured the release of more than 100 wrongfully detained Americans held overseas, she added.

The State Department has formally designated Chen as the only U.S. citizen wrongfully detained in China, a classification that elevates his case to high-priority status for U.S. diplomatic engagement and typically triggers intensive diplomatic efforts to secure his release. Secretary of State Marco Rubio officially made this designation in March, and a State Department spokesperson confirmed Tuesday that U.S. officials have repeatedly raised Chen’s case directly with Chinese authorities, formally calling for his immediate release. The Washington Post first reported on Chen’s detention earlier this year.

White House spokesperson Anna Kelly reaffirmed the administration’s position Tuesday, stating that President Trump has repeatedly made clear that bringing every wrongfully detained American home is a top priority, and that the administration has already reunited more than 100 individuals with their families since Trump took office this term. In 2024, the Biden administration oversaw the successful release of three other wrongfully detained American citizens from China, setting a precedent for high-level diplomatic action on such cases.

Eric Lebson, a Global Reach adviser working with Chen’s family, explained that the relatives chose to go public now because there has been no visible progress from Chinese officials, despite President Xi’s stated commitments to President Trump when the case was raised in May. If no resolution is reached before the September summit, Lebson warned that Chen’s case will be a prominent topic during the bilateral meeting between the two leaders.

Senator Edward Markey, a Massachusetts Democrat who represents Chen’s home constituency, also vowed Tuesday to use every tool at his disposal to push for Chen’s immediate release. “It is my hope that increased attention on his unjust detention will force the Chinese government to do the right thing and release Dr. Chen and allow him to return to his family in Massachusetts,” Markey said.