蝦線

虾 = 虫 + 下 : In order to be admitted to the ashram Xi Shi (xi) has to complete a trial in front of it (a1). She has to survive a sea of shrimp (虾) only with the help of a ladder (下) on which she can save herself from the shrimp army. To not make it too easy for her though there's also an army of mosquitoes (虫) harassing her.

线 = 戋 + 纟 : Mnemonic symbol: barbed wire.

线 = 戋 + 纟 : The silk worm wants to use the floating tank in the anthill's bathroom, but there's already Marie Curie inside—and she secured the tank by setting up barbed wire all around it.