碧血

碧 = 珀 + 石 : Brunhilde (bi) is using the space station's bathroom (Ø4), but today she is feeling very unwell. All she produces consists of rock (石), amber (珀) and green jade (碧).

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.