DECODEKEY

键 

KEY jian. just insert it and next, turn.

Metal+Stretched Stride+Hand+Fertile Flowing Brush=Key

金 及 手 丰

解密 DECODE jiemi = split secret.

Horn+Sword+Ox=Split解

角刀牛 jie just inevitably encoded

Roof+Slashed Heart+Mountain=Secret

under a Roof宀  on top of a Remote Mountain山 you MUST必须 keep the secret秘密 of proper spear 丿 construction close to your heart心 or else you suffer a spear to the heart.

须xu is the image of the head 页 of a wise old man stroking his beard彡. He knows secrets 须BEARD (lit.) MUST (metaphor) memory trick: you Must shave your Beard.

the amount of taxed imperial grain 禾 you must 必 have for the construction of a proper spear 丿  is a state SECRET秘 and thus held close to heart.

 

Password 密码 Must + Code: Stone石 Horse马 = Code, Number, measure of distance. "How many stone horses are buried with the emperor?"

Memory tricks; 是吗? Really?