凹凸不平

凹 = 凵 : Albert Einstein (Ø) wants to observe the universe, so he installs a convex (凹) lens in front of the aorta (ao1).

Tommy Turtle (tu) is installing a convex (凸) lens to the outer hull of the space station (Ø1). The lens is so convex that Tommy Turtle is unable to embrace it with his arms.

不 = 丆 + 卜 : Bruno Bear (bu) is setting up a wind wheel (丆) with a voodoo staff (卜) in the space station's bathroom (Ø4). He also puts a "forbidden" sign (mnemonic symbol for 不) on it, to make clear that it may not (不) be stopped.

平 = 丷 + 干 : Mnemonic symbol: a pan (平底锅) as it has a very flat and level surface.

Pocahontas (pi) is fighting with a crocodile (丷) just inside the engine's kitchen ((e)ng2). She's throwing so many dried fruits (干) at it that it's totally flat (平) soon. She gives it a last blow striking with a frying pan (平).

平 = 丷 + 干 : Mnemonic symbol: a pan (平底锅) as it has a very flat and level surface.

Pocahontas (pi) is fighting with a crocodile (丷) just inside the engine's kitchen ((e)ng2). She's throwing so many dried fruits (干) at it that it's totally flat (平) soon. She gives it a last blow striking with a frying pan (平).