自負盈虧

自 = 丶 + 目 : Mnemonic symbol: a hand mirror, which someone uses to look at themselves.

The Eye of Providence (目) is looking at itself (自) in a handheld mirror (自) in the space station's bathroom (Ø4). It think it's indeed looking very good, since Zorro (z) attached a petal (丶) to its eye (目).

负 = ⺈ + 贝 : Mnemonic symbol: an opossum (负鼠) who carries her babies on her back.

A few pals practice their cosplay on the space station's bathroom. They want to reenact the town musicians of Bremen, and so Frieda Fuchs stands at the bottom, the crab is on top of Frieda, the crane is on top of the crab, the opossum is on top of the crane, and the opossum carries her babies on her back.

盈 = 乃 + 又 + 皿 : Maud Younger (y) is boxing (又) with the poltergeist (乃) in the engine's kitchen ((e)ng2). It is a very fierce match: all the small bowls (皿) standing around are already filled (盈) with their blood.

亏 = 二 + ㇉ : Mnemonic symbol: a lucky leprechaun. The leprechaun (亏) wants to propose to Karl Koala (ku) and uses the romantic moment in front of the Eiffel Tower (ei1). Unfortunately he has no ring, so he uses a capacitor (二) of which he bent the legs to build a ring. He's quite lucky (亏), because right after he gives the ring to Karl, a lightning bolt (㇉) strikes and hits poor Karl Koala. Had the leprechaun kept the ring, the lightning bolt would have hit him instead.