吸力

吸 = 及 + 口 : Just when Marie Curie (xi) and Yuwen Huaji (及) were on a space trip in front of the space station (Ø1) they encountered an emergency: the failure of their oxygen supply. Their last hope is a hollow mandarin (口) they brought, out of which they suck (吸) their oxygen.

力 = ㇆ + 丿 : Mnemonic symbol: a power button.

Li Qingzhao (li) just had a shower in the space station's bathroom (Ø4) and wants to use the hair dryer, but there's no plug, just the bare end of the cable! She uses all her power to build an electricity plug, and for the two pins she uses a plough (㇆) and a banana (丿). Finally she hits a big power button (力) to turn the power on.