潛心

潜 = 替 + 氵 : The Queen of Hearts (qi) emptied her water bottle (氵) and is aiming to replenish (替) it in the anthill's kitchen (an2). Secretly (潜) she fills her water bottle by submerging (潜) it in a big water-filled flower pot.

心 = 乚 + 丶 : Marie Curie (xi) uses a shovel (乚) to dig a hole in front of the encampment ((e)n1). She wants to bury her heart (心). To the side are three petal leaves (丶), with which she wants to cover it afterwards.