李
=
子
+
木
:
In the space station, Li Qingzhao shakes a Christmas tree which is decorated with eggs. The eggs fly off and as they break open, plums fly out of them.
Sherlock Holmes (sh) is cleaning a flower pot (廿) under the shower of the space station's bathroom (Ø4) with a loofah (L) because he didn't quite understand a poster next to the shower from the WHO (世) explaining dangers arising from different germs.