血漬斑斑

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.

斑 = 文 + 玨 : Beelzebub (b) is reading a thick book (文) about necklaces (玨) in front of the anthill (an1) when he spots that there are a lot of yellow spots (斑) on each page.