Pyongyang goes through a lot of trouble keeping its cruise missile capabilities hidden, why ?
North Korea has air-launched cruise missiles, and it looks like they store them at an airfield in Uiju, near the PRC border. The DPRK puts its ballistic missiles on display and incorporates them into strategic propaganda. The DPRK does this less often with its cruise missiles, particularly its air-launched cruise missiles, which are quietly tested without much announcement and no camera coverage.
Uiju has been historically associated with the DPRK’s secretive air-launched cruise/anti-ship missile programs and is one of the few airbases that can effectively host the DPRK’s aging Ilyushin Il-28 bomber. The IL-28 has also previously been associated with older DPRK air-launched cruise missile programs.