背

be̅i = b + ei1

variant of 背[bei1]

背 = 北 + 月 : Mnemonic symbol: 背包, rucksack.

Beelzebub is on a trip to Paris together with the moon, which he carries in a rucksack. Beelzebub always follows his compass rose, but since it is affected by the moon's magnetic field, Beelzebub and the moon just circle the Eiffel Tower.

背

be̅i = b + ei1

to be burdened / to carry on the back or shoulder

背

bèi = b + ei4

the back of a body or object / to turn one's back / to hide something from / to learn by heart / to recite from memory / unlucky (slang) / hard of hearing

背 character breakdown

背
- 北
  - 匕
    - 丿
    - 乚
  - 丬
    - 丨
    - 冫
  - 爿
    - 丆
      - 一
      - 丿
    - 丩
      - 丨
- 月
  - 二
    - 一
  - ⺆
    - 丿
    - ㇆
      - 一
      - 亅

北

běi = b + ei3

north / (classical) to be defeated

北 = 丬 + 匕 : A compass rose. In the Eiffel Tower, Beelzebub tries to build a compass. As a baseplate he uses a piece of wood, on which he sticks the north pike of a compass rose. On the south pike he balances a ladle, which is supposed to adjust itself to earth's magnetic field.

月

yuè = yu + e4

moon / month / monthly / CL:個|个[ge4],輪|轮[lun2]

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.