知
=
口
+
矢
:
Mnemonic symbol: Francis Bacon is attributed to have stated "scientia potentia est", "knowledge is power". I'll thus represent 知 by Francis Bacon. Francis Bacon (知) and James II of England (zh) are playing darts (矢) in front of the space station (Ø1). Because they lack a dart board they just use a mandarin (口).
青
=
龶
+
月
:
Mnemonic symbol: a cyan-colored fountain of youth.
青
=
龶
+
月
:
The moon opened a very profitable start-up in front of the engine. He put up a fountain of youth and--wearing a fancy headdress--charges the Queen of Hearts a fortune for drinking from the fountain.