小洞不堵，大洞受苦

小 = 八 + 亅 : Mnemonic symbol: a small daisy. 小 looks like the stem 亅 of the flower is pushing aside the earth 八 as it grows out of the seed in the ground.

Xi Shi (xi) is decorating her hair with lots of small (小) daisies (mnemonic symbol for 小) in the aorta's living room (ao3). She wants to have lots of daisies in the future as well, so she plants new daisies. She found that the perfect substrate for planting daisies is made by crushing eight-balls (八) with a crow bar (亅).

洞 = 同 + 氵 : Doggy Dog (du) finds two twins (同) have fallen down the cave (洞) in the engine's bathroom ((e)ng4). He immediately begins to dig a tunnel to bring them a bottle of water (氵) until more help arrives.

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.

堵 = 土 + 者 : Louis XIV (者) built castle walls (堵) out of dirt (土) in the space station (Ø3), but now since the passage through the space station is blocked (堵), every morning when Doggy Dog (du) commutes to work he gets stuck in a traffic jam (堵) caused by the castle walls.

大 = 一 + 人 : The big (大), huge (大) robot (mnemonic symbol for 大) is working out in the ashram's bathroom (a4). He's lifting a flute (一) to which Don Quixote (d) and Neanderthal man (人) are clinging.

受 = 爫 + 冖 + 又 : Mnemonic symbol: 受 is often used in a negative sense, when something bad happens to the speaker. I thus represent 受 by a stretcher, which is used to transport injured persons.

受 = 爫 + 冖 + 又 : Sherlock Holmes lost a boxing fight in the outhouse, and he's lying on a stretcher in the bathroom now. He still has his boxing gloves on. He got beaten so badly that is opponent was even able to shave his head with an electric razor. Nobody had a cover at hand, so he's just provisionally covered with a cooking top.

苦 = 艹 + 古 : Karl Koala decided to repent for his sins and retreated into a cloister inside the space station. There he leads a very simple life full of hardship, e.g. he gave up on eucalyptus and just eats very bitter artificial lawn.