血緣

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.

缘 = 彖 + 纟 : Yu the Great (yu) is foreseeing the silkworm's (纟) future in the anthill's kitchen (an2) using the Book of Changes (彖). The book says that the silk worm has great karma (缘) and will lead a long and fulfilled life.