Pinyin "dong3"

In MandarinBanana's mnemonic system, the Pinyin syllable "dong3" is split up into two parts: "du" 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 "du"

Du is for Doggy Dog.

Mnemonics for Pinyin final "(e)ng3"

In the engine's living room.

Characters pronounced dong3

董
dǒng = du + (e)ng3
to supervise / to direct / director
董 = 艹 + 重 : Doggy Dog (du) supervises (董) the space elevator (重) inside of the engine ((e)ng3). Currently it is transporting artificial lawn (艹) and antiques (古董) to the space station.
董
dǒng = du + (e)ng3
surname Dong
董 = 艹 + 重 : Doggy Dog (du) supervises (董) the space elevator (重) inside of the engine ((e)ng3). Currently it is transporting artificial lawn (艹) and antiques (古董) to the space station.
懂
dǒng = du + (e)ng3
to understand / to comprehend
懂 = 忄 + 董 : Doggy Dog (du) is seeking to understand the inner structure of antiques (董) inside of the engine ((e)ng3). To see the inner structure he smashes the antiques with a flail (忄).