胸

胸 = 匈 + 月 : Xu Xian (xu) noticed Bela Lugosi (匈) is just going out when the full moon (月) is shining at the night sky and suspects that he is a vampire. Therefore, he plots against Bela and one month later, he rams a stake into Bela's chest (胸) in front of the engine ((e)ng1). Bela just feels a little chest (胸) pain but nothing more, since Xu Xian missed his heart.

匈 = 凶 + 勹 : Mnemonic symbol: Bela Lugosi, a famous Hungarian-American actor, famous for his role as dracula.

Xu Xian (xu) thinks Dracula is roaming about in front of the engine ((e)ng1), so he decides to scare him away, riding atop of an elephant (勹) and wearing a vicious demon mask (凶). Bela Lugosi (匈) is so terrified he almost gets a heart attack.

月 = ⺆ + 二 : Yu the Great (yu) is modelling a moon (月) in the elevator's bathroom (e4). He uses a stapler (⺆) to staple a lot of capacitors (二) together to form a moon shape, while the real moon is sitting for him.