lìng
=
li
+
(e)ng4:
other / another / separate / separately
Mnemonic
Mnemonic symbol: to separate two liquids, one can use a distiller.
In engine's bathroom ((e)ng4) Li Qingzhao (li) wants to distill a liquor (另) out of mandarins (口). She puts the mandarins in the distiller and hits the power button (力).