测地曲率

测 = 则 + 氵 : Wu Zetian (则) and the King of Chu (c) think that they are a good match and want to marry, but before they do, they interview (测) each other in the elevator's bathroom (e4). They spin a water bottle (氵) and whoever it is pointing at has to fill out the other one's survey (测).

地 = 也 + 土 : Dorothy Gale (di) hates the cleanliness of the space station, so she used an excavator (也) in the space station's bathroom (Ø4) to dig a pile of dirt (土) out of the ground (地) for a mud bath.

曲 = 囗 + 卄 : Mnemonic symbol: a harp. Cupid (qu) is playing a harp (曲) in the space station's living room (Ø3). He's sitting on a big enclosure (囗), playing the harp (曲) and wielding a double axe (卄) at the same time.

率 = 冫 + 十 + 玄 : Sheldon Shrimp (shu) is surprised by a stream of lava (玄) rushing into the airplane's bathroom (ai4). He acts quickly (率) and jumps on a huge cross (十) to save himself. Then he continues to lead (率) the stream of lava around the cross by placing popsicles (冫) on the floor in just the right way, so that the lava passes his cross without melting it. He notices that the heat flow to either side of the cross corresponds to the golden ratio (率).