硬领

硬 = 更 + 石 : Maud Younger (y) finds the snake which ate too much (更) in the engine's bathroom ((e)ng4), and it feels miserable. To make the snake feel better Maud massages the snake using two warm stones (石). As Maud massages the snakebshe finds that the snake's belly is really hard (硬).

领 = 令 + 页 : Li Qingzhao wants to explore the catacombs below engine, which can only be accessed from inside engine. Because it is so dangerous down there she has to hand in a piece of paper with her name and gets back a name-tag which she has to clip to her dog collar so that she can be identified should something go wrong.