严密

严 = 亚 + 厂 : Mnemonic symbol: a tightly sealed bottling jar. Just inside the anthill's kitchen, Maud Younger is working on her top secret project. On a table she's got a sealed bottling jar of Mapo Doufu and a still packaged and sealed chocolate factory. She plans to modify the chocolate factory to produce Mapo Doufu, to sell the food world wide.

严 = 亚 + 厂 : Mnemonic symbol: a tightly sealed bottling jar. Just inside the anthill's kitchen, Maud Younger is working on her top secret project. On a table she's got a sealed bottling jar of Mapo Doufu and a still packaged and sealed chocolate factory. She plans to modify the chocolate factory to produce Mapo Doufu, to sell the food world wide.

密 = 宀 + 必 + 山 : Marilyn Monroe (mi) is secretly (密) making out with her secretary (密) Khubilai Khan (必). Because it has to be a secret (密), they meet in the space station's bathroom (Ø4) and hide under a huge graduation cap (宀). Just to be sure Khubilai Khan has two forks (山) in his hands to attack anyone who might enter and see them.