蛇胆

蛇 = 它 + 虫 : Sherlock Holmes (sh) is investigating the death of a mosquito (虫) in the elevator's kitchen (e2). He took a blood sample from the mosquito and analyzes it with his computer (它). It turns out that the mosquito stung the venomous snake (蛇) which is sleeping across the hall, and the venom killed the mosquito.

胆 = 旦 + 月 : Don Quixote (d) suffers from a huge moon-shaped (月) gall stone (胆), so inside of the anthill (an3) he drinks medicine from a big mug (旦). His moon gall stone is so big, it has gall stones on its own and it is drinking medicine from a mug as well.