血压计

血 = 丶 + 皿 : Mnemonic symbol: blood transfusion.

Xu Xian hurt himself and needs to get a blood transfusion in the elevator's bathroom. He found a petal leaf as donor, which is bleeding droplets into a bowl; Xu Xian gets the blood from the bowl as infusion using some tubes.

压 = 厂 + 丶 + 土 : Maud Younger once heard that if you apply enough pressure, one can make diamonds out of dirt. In front of the ashram, she tries this out: She puts some dirt into a chocolate factory, applies as much pressure as she can, but all that comes out are petal leaves.

计 = 十 + 讠 : Joan of Arc inspects an advertising column in the space station's bathroom. On it there is an intricate pattern of crosses. With an calculator she tries to calculate the overall area the crosses take on the advertising column.

计 = 十 + 讠 : Joan of Arc inspects an advertising column in the space station's bathroom. On it there is an intricate pattern of crosses. With an calculator she tries to calculate the overall area the crosses take on the advertising column.