占中

占 = ⺊ + 口 : Mnemonic symbol: a yellow umbrella. James II of England occupies the anthill's bathroom (an4). He uses a pennant (⺊) stuck into a mandarin (口) to mark his territory, and stands there proudly with a yellow umbrella (占).

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.