四
=
儿
+
囗
:
Mnemonic symbol: a four-leaved clover. Socrates (s) is working out in the bathroom of the space station (Ø4). He's lifting four (四) wooden boxes (囗), and wonders why they are so heavy. He doesn't know that inside one of the four boxes, the monkey king (儿) is hiding and secretly laughing at him - until the monkey king comes out and surprises Socrates with a four-leaved clover (四).
湖
=
氵
+
胡
:
Helga Horse (hu) is doing an experiment just inside the space station's entrance (Ø2). She lets the water out of a water bottle (氵) and it forms something like a ball very soon. Helga Horse then uses her Confucius beard (胡) to create a loop and let the water, through the surface tension, expand by stretching the loop. She wants to find out how far she can stretch to get a little lake (湖).
乡
=
幺
+
丿
:
Marie Curie's tractor got stuck in a pile of bananas in front of the anglepod, with the wheels spinning helplessly. Her last hope is that she'll be able to free the tractor by pushing aces under the wheels, so that she can bring the tractor back to her hometown.