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.
闲
=
木
+
门
:
In her free time (闲) Marie Curie (xi) likes to sit in the anthill's kitchen (an2) to watch her trap door (门). She installed it right under a Christmas tree (木) so whenever someone puts a present under the Christmas tree, shortly afterwards it will fall through the trap door in Marie's secret chamber.