共振

共 = 井 + 八 : A giant eight-ball is blocking the well in the engine's bathroom. Joining forces together with the communist, Gitta Giraffe and he are able to push the eight-ball off and make the well available to the public again.

共 = 井 + 八 : Mnemonic symbol: the communist.

振 = 扌 + 辰 : James II of England (zh) got a birthday cake (辰) and he wants to find out whether it is made with gelatin or pectin. In the encampment's bathroom ((e)n4) he therefore slaps the cake several times with a toy claw (扌) to make it vibrate, and to determine the gelling agent by the resonance (振) frequency of the cake.