Pinyin "gong3"

In MandarinBanana's mnemonic system, the Pinyin syllable "gong3" is split up into two parts: "gu" and "(e)ng3". You can visit the Pinyin index to see how other Pinyin syllables are split up into initials and finals.

Mnemonics for Pinyin initial "gu"

Gu is for Gitta Giraffe.

Mnemonics for Pinyin final "(e)ng3"

In the engine's living room.

Characters pronounced gong3

hands joined

= 丿 + + : Handcuffs. Gitta Giraffe is sitting inside of the engine, her hands tied up with handcuffs. There's a flute as horizontal bar, and attached to either side are a banana and a dinosaur bone, so that she cannot slide off the chain.
secure / solid

= + : Mnemonic symbol: a padlock is both secure and solid.

Although it is forbidden, van Gogh (凡) created a new piece of art by securing (巩) steel beams (工) to the rocks inside of the engine ((e)ng3) using padlocks (巩). Gitta Giraffe, who is to care about engine tries to remove the piece, but it is very solid (巩).
to cup one's hands in salute / to surround / to arch / to dig earth with the snout / arched
mercury (chemistry)
variant of 汞[gong3]