DF-21D/HGV/HN-2000 has already neutralized US Naval dominance in the South China Sea. You won't find China's best weapons at Zhuhai Air Show. The CX-1 is for export and for trolling the Brahmos.
Neutralized?
US Navy ‘Shaping Events’ in South China Sea
Has anyone ever wondered why the USN and USAF don't use supersonic cruise and anti-ship missiles? It isn't that they can't build them, they most certainly can, but that there are downsides to supersonic speeds. Yes, the kinetic energy of a high speed object is enough to defeat many ships without the need for a warhead and their speed complicates and shortens countermeasure responses, but the range and maneuverability of supersonic systems compromises their overall effectiveness. Subsonic systems such as the HN-2000 and its US counterpart the Tomahawk have long-ranges, can be reprogrammed for different targets or have their flights terminated, they can loiter and look for targets, and they can carry massive payloads. Supersonic missiles have smaller payloads, but this tends to be offset by their kinetic energy, shorter ranges and shorter flight times which means that the missile cannot be reprogrammed for a different target. The Russians, seeing the limitations of supersonic missiles, have even begun to use subsonic systems with a last minute high-speed dash (the Klub system) instead of true supersonic missiles. Both have their limitations and each can be easily defeated. The CX-1 and similar systems are not the boogeyman that people claim they are either.
Hm. This might anger the supporters of DF-21 SCMs. lol