mù
=
mu
+
Ø4:
(bound form) tree / (bound form) wood / unresponsive; numb; wooden
Mnemonic
Mnemonic symbol: a Christmas tree.
Malte Monkey (mu) is setting up a Christmas tree (木) in the bathroom of the space station (Ø4). He decorates the tree with eight-balls (八) and puts a holy cross (十) at the top of the tree.