禁止外出

禁 = 林 + 示 : There's a small forest of two Christmas trees (林) in front of the encampment ((e)n4). Although there's a sign clearly stating that it is forbidden (示) to touch the trees, Joan of Arc (ji) set up her guideon (示) so that it is supported by the two trees and she can practice pull ups.

止 = ⺊ + 丨 + 一 : Mnemonic symbol: a barrier. James II of England (zh) is marking his area in the space station's living room (Ø3) with a big barrier (止), in front of which he sets up his pennant (⺊). He places a soldier left and right to the barrier, armed with a dinosaur bone (丨) and a flute (一) respectively.

外 = 夕 + 卜 : There's a hole in the wall of the airplane's bathroom (ai4), and from outside (外), a bat (夕) wants to enter. Willy Walrus (w) is very afraid of bats, so he does his best to hinder the bat from entering with a voodoo staff (卜).

出 = 屮 + 凵 : Mnemonic symbol: 出 tilted 90 degrees looks like "EE". "EE" is an abbreviation for "emergency exit". In front of the space station (Ø1) Chantal Chicken (chu) plugged her thornbush (屮) into a receptacle (凵), but it short circuited and immediately caught fire. Chantal has no option but to use the emergency exit (出) she came out of to go back into the space station.