Why be secretive about this stuff? Isn't its whole raison d'etre to be a deterrent in the face of American anti-missile systems? Or is this something more like a Corbomite Maneuver?
The Chinese are generally quite secretive about everything unless it's been in full-scale production for a while.
They probably think that their manoeuvrable ballistic missiles are already enough of a deterrent, being hypersonic already, and those are actually deployed and ready for combat, so much more of a deterrent.
