虹
=
工
+
虫
:
Helga Horse (hu) wants to decorate engine's entrance ((e)ng2) by putting a rainbow (虹) over it. Before she can install the rainbow she first has to set up a steel beam (工) as support though. Fortunately there is a very strong mosquito (虫) who helps her to set up the beam above the entrance.
灯
=
丁
+
火
:
Don Quixote (d) was going for a walk in front of the engine ((e)ng1) with his lantern (灯) when it suddenly catched fire (火). He used a lantern which utilizes hydrogen, and when he accidentally ripped his lantern open at a nail (丁) on the floor, the hydrogen caught fire.