....................
COMMENT
Although the Baotou pieces appear similar in design to the Bull 'supergun' concept, it seems unlikely that they are intended for long-range artillery barrages or anti-satellite operations given China's extensive long-term development of ballistic missiles for both of these missions.
Alternatively, the devices could also be railgun 電磁砲 prototypes, although this appears unlikely as there is no significant external power routed to the test pad and a lack of environmental protection. The other possibility is that China is simply reusing the legacy systems from its long-range artillery programmes from the 1970s and 1990s as part of a projectile test range - a view that is supported by the presence of what appears to be 'used' targets on the northwest side of the pad.