U.S. Underground Nuclear Expert Detained in China for 18 Months on Espionage Charges

A renowned U.S. seismologist specializing in underground nuclear tests has been detained in China for over 18 months on espionage charges, according to a statement by U.S. Senator Edward Mach. The Trump administration reportedly raised the issue during a summit with Chinese President Xi Jinping, designating Dr. Yu Ren Chen as the only U.S. citizen detained in China officially classified as a 'wrongfully detained' individual. The case has emerged amid efforts to stabilize U.S.-China relations, potentially complicating preparations for Xi's upcoming U.S. visit. China's detention of another U.S.-based Chinese scholar, Min Jin, on national security charges has further intensified concerns over the incident's implications for bilateral tensions.