濒于

濒 = 氵 + 频 : When Brunhilde (bi) approaches (濒) the forbidden city ((e)n1) everybody notes her arrival by the way the water moves in the water bottles (氵) because the cavity of the water bottle matches the eigenfrequency (频) of how Brunhilde is walking.

于 = 亅 + 二 : Mnemonic symbol: prepositions are what glue the sentence together. Honey is as sticky as glue, so I'll represent 于 by a honey jar.

Yu the Great was assigned to repair the electrics of the space station's entrance, but instead she was snacking some honey from a honey jar. Now her capacitor got stuck in the honey and she has to use a crowbar to lever it out.