空
=
工
+
穴
:
In front of the engine, Karl Koala found some very special cave paintings. Using steel beams he constructs a protective cover. He also installs air conditioning to make the best environment possible to preserve the cave paintings.
cavity of body / barrel (e.g. engine cylinder) / compartment / tune / accent of speech
腔
=
月
+
空
:
In front of the anglepod (ang1) the Queen of Hearts (qi) helps the moon (月) to install air conditioning (空) so that his cavity (腔) is always at the right temperature.