spring (small stream) / mouth of a spring / coin (archaic)
泉
=
水
+
白
:
Cupid (qu) opened a hot spring (泉) in the anthill's kitchen (an2) by connecting a water fountain (水) with the anthill's heating system. To mark his hot spring as a place of peace he set up a white flag (白) at the side of the spring.
Sherlock Holmes (sh) started a supermarket (市) in the space station's bathroom (Ø4), but all he has for sale right now are berets (亠) and towels (巾). He should have opened it at the beach!