睡夢中

睡 = 垂 + 目 : Sheldon Shrimp (shu) is sleeping (睡) on top of a weeping willow (垂) in the Eiffel Tower's bathroom (ei4). His sleep (睡) is guarded by the eye of providence (目) which is hovering next to the tree (睡).

梦 = 夕 + 林 : Mahatma Gandhi (m) once had a very strange dream (梦). He was occupying the engine's toilet ((e)ng4) and saw bats (夕) sitting in the forest trees (林) surrounding him. Suddenly he came to the realization that just like the bats occupying the trees, people could reclaim the streets through sit-ins. Gandhi was so impressed by this dream that he dedicated his life to this mission.

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.