(TCM) the four methods of diagnosis, namely 望診|望诊[wang4 zhen3] (observation), 聞診|闻诊[wen2 zhen3] (auscultation and olfaction), 問診|问诊[wen4 zhen3] (interrogation), 切診|切诊[qie4 zhen3] (pulse feeling and palpation)
四
=
儿
+
囗
:
Mnemonic symbol: a four-leaved clover. Socrates (s) is working out in the bathroom of the space station (Ø4). He's lifting four (四) wooden boxes (囗), and wonders why they are so heavy. He doesn't know that inside one of the four boxes, the monkey king (儿) is hiding and secretly laughing at him - until the monkey king comes out and surprises Socrates with a four-leaved clover (四).
诊
=
㐱
+
讠
:
After James II of England (zh) got his new Afro (㐱) he walks past an advertising column (讠) in the encampment's living room ((e)n3). On it it is written that recently there have been many lice infestations and that everyone should go and get an examination (诊).