Don Quixote uses some glue to glue a hand held sonar to a bamboo stick just inside the ashram's kitchen. Stupid thinks that the sonar is a camera and wants to shoot a selfie.
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.