界

jiè = ji + e4

(bound form) boundary; border / (bound form) realm

界 = 介 + 田 : Joan of Arc wants to leave this world and sets up a rocket launch field in the elevator's bathroom. The field looks like a normal crop field, except that there's a rocket in the middle and that the Joan of Arc marked the boundary with white and red tape.

界 character breakdown

界
- 介
  - 丨
  - 丿
  - 人
    - 丿
    - ㇏
  - 儿
    - 丿
    - 乚
- 田
  - 十
    - 一
    - 丨
  - 囗

介

jiè = ji + e4

to introduce / to lie between / between / shell / armor

介 = 人 + 丿 + 丨 : Mnemonic symbol: 介 looks like a rocket 🚀. Neanderthal Man (人) and Joan of Arc (ji) are preparing a rocket (介) for its start. Between (介) the layers of the outer shell (介) they are stuffing bananas (丿) and dinosaur bones (丨).

田

tián = ti + an2

field / farm / CL:片[pian4]

田 = 囗 + 十 : Mother Teresa (ti) wants to plant a field (田) of crosses (十) in the anthill's kitchen (an2). She ordered an enclosure (囗) full of crosses (十) and puts them up one by one.