China's New 'Mach 6' Drone Could Be a Copycat of America's D-21 (That Spied on China)
China's WZ-8 drone, reminiscent of the American D-21, was revealed in 2019 as a sophisticated UAV capable of Mach 3.0 speeds and operating at altitudes up to 100,000 feet.
Source: nationalinterest.org