相
=
木
+
目
:
Mnemonic symbol: I take "eye" and "tree" as resembling an ent, an alive tree. Xi Shi (xi) portrays (相) an ent (相) in the anglepod's bathroom (ang4). Unfortunately she's really bad at painting, and her portrait resembles more a Christmas tree (木). The Eye of Providence (目) enters and, just from the shape of the Christmas Tree, instantly recognizes its own portrait (相).
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.
间
=
日
+
门
:
Joan of Arc wants to try a new approach of solving earth's energy crisis. In front of the anthill she set up a changing cubicle and invites the sun to try it out. The sun doesn't know that the Joan of Arc installed a trap door inside of the changing cubicle and plans to exploit the sun as quasi inexhaustible energy source once she captured her.