U.S. releases new details on alleged secret Chinese nuclear test

Nuclear capable DF-31BJ ballistic missiles are shown on transporters during a military parade in Beijing, China on September 3, 2025. China is undergoing a massive expansion of its nuclear arsenal.

At a event in Washington D.C., A U.S. official said a remote earthquake in 2020 was caused by a Chinese nuclear test.

(Image credit: Kevin Frayer)