去中心化

去 = 厶 + 土 : Mnemonic symbol: The "nose" part (厶) can be seen as an arm, which goes through "earth" (土), and this reminds me of some protesters who lock themselves (or their arms, to be specific) to concrete barrels. Cupids dirt capsule could also be a concrete barrel. So in other characters, I'm going to represent 去 by a concrete barrel.

Cupid (qu) is trying to send himself to earth. In the bathroom of the space station (Ø4), he has prepared a capsule made of dirt (土). He's wearing his lucky fake nose (厶) when entering the capsule.

中 = 丨 + 口 : Mnemonic symbol: a dart board, because you always try to hit the center.

Julian Giant Squid (zhu-) is throwing dinosaur bones (丨) as darts on a dart board in front of the engine ((e)ng1). To make it a bit more difficult he's throwing mandarins (口) into the air as well and skewers them up right in the center (中 is a mandarin skewered on a dinosaur bone) in mid flight with the dinosaur bones. He's still able to consistently hit the center (中) of the dart board.

心 = 乚 + 丶 : Marie Curie (xi) uses a shovel (乚) to dig a hole in front of the encampment ((e)n1). She wants to bury her heart (心). To the side are three petal leaves (丶), with which she wants to cover it afterwards.

化 = 亻 + 匕 : Helga Horse and Rosa Luxemburg conduct an experiment in the ashram's bathroom. Using a transformer, they melt a ladle.