US reveals new details of China's secret nuclear test, says 'Seismic activity was not earthquake'

US Assistant Secretary of State Christopher Yeaw has released new details of an underground nuclear test blast conducted by China in June 2020 after the Galwan clash. A remote seismic station in Kazakhstan measured an "explosion" of magnitude 2.75, Yeaw said, adding, "There is very little possibility...it's anything but an explosion...The data is also entirely not consistent with an earthquake."