重碳酸盐

重 = 千 + 里 : Mnemonic symbol (from the shape of the character): this one looks like a space elevator. The two top strokes are the heavens, the two bottom strokes are the earth, and the part in between is the cabin (or climber) of the space elevator.

Chantal Chicken (chu) is working in the engine's kitchen ((e)ng2). Her job is to crush sunflower (里) seeds with a 1 kg weight (千) to get the kernels. Then she has to put the kernels into the cabin of a space elevator (重) to send them to outer space. This repeats (重) again and again day in, day out.

重 = 千 + 里 : Mnemonic symbol (from the shape of the character): this one looks like a space elevator. The two top strokes are the heavens, the two bottom strokes are the earth, and the part in between is the cabin (or climber) of the space elevator.

Julian Giant Squid (zhu) installed a space elevator (重) in the engine's bathroom ((e)ng4). For the maiden trip, and as a stress test, he loads one thousand (千) one kilogram weights (千) and decorates them with sun flowers (里) to celebrate the occasion.

碳 = 炭 + 石 : Tecumseh (t) further processes the charcoal (炭) he made in the anthill's bathroom (an4) into pure carbon (碳) by crushing the charcoal (炭) into its elements and exerting extreme pressure with a rock (石).

酸 = 夋 + 酉 : The rooster (酉) and Susan Saint Bernard (su) where once friends, but recently they haven been fighting over a lover. Because they are both wuxia (夋) superheroes, they have been fighting for three days in front of the anthill (an1) without determining a winner. Finally they decide to settle their sour (酸) dispute and share a tart (酸) tarte to renew their friendship.

盐 = 土 + 卜 + 皿 : Maud Younger (y) finished cooking a dish in the anthill's kitchen (an2) when she finds that she's out of salt (盐). Her last hope is to put some dirt (土) in a bowl (皿) and trying to change it into salt (盐) using a voodoo staff (卜).