中低端

中 = 丨 + 口 : Mnemonic symbol: a dart board, because you always try to hit the center.

Julian Giant Squid (zhu-) is throwing dinosaur bones (丨) as darts on a dart board in front of the engine ((e)ng1). To make it a bit more difficult he's throwing mandarins (口) into the air as well and skewers them up right in the center (中 is a mandarin skewered on a dinosaur bone) in mid flight with the dinosaur bones. He's still able to consistently hit the center (中) of the dart board.

低 = 亻 + 氐 : Dorothy Gale (di) and Rosa Luxemburg (亻) are in a hopeless situation. They are hanging down (低) from a foundation (氐) floating in front of the space station (Ø1) and away from it. In this hopeless situation their moods are very low (低) and they let their heads hang down (低).

端 = 立 + 耑 : Doggy Dog (du) is carrying (端) a vase (立) in front of the anthill (an1) and wants to put it right on the race track's starting line (耑). It's just in case he has to use the washroom right before the race.

端 = 立 + 耑 : Doggy Dog (du) is carrying (端) a vase (立) in front of the anthill (an1) and wants to put it right on the race track's starting line (耑). It's just in case he has to use the washroom right before the race.

耑 = 山 + 而 : Mnemonic symbol: the starting line of a race track.

Doggy Dog is waiting for the big race to begin in front if the anthill. There's a gate at the starting line which consists of a fork and a comb. When the race starts, the gate will fling open.