中山公园

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.

山 = 丨 + 凵 : Mnemonic symbol: 山 looks like the tip of a fork. Sherlock Holmes (sh) is climbing a mountain (山) in front of the anthill (an1). He uses a dinosaur bone (〡) as walking stick, and to have better grip he attached a fork (山) to its tip. Unfortunately he accidentally sticks the fork into a receptacle (凵) on the ground of the mountain and gets shocked.

公 = 八 + 厶 : Mnemonic symbol from 公交车: a (magic) bus.

公 = 八 + 厶 : Gitta Giraffe has to deliver 100 eight balls to engine driving a magic bus. She is driving in front of the engine and because the load is so heavy, she is driving very slowly. Additionally, she tried to decrease the wind resistance by installing a large fake nose at the front of the bus.

园 = 元 + 囗 : Yu the Great receives a big wooden box just inside the anthill's kitchen. It's written that it comes from the land of growing plants, but as she opens it, she finds out that it's actually full of coins.

园 = 元 + 囗 : Yu the Great receives a big wooden box just inside the anthill's kitchen. It's written that it comes from the land of growing plants, but as she opens it, she finds out that it's actually full of coins.