Pinyin "xiong4"
In MandarinBanana's mnemonic system, the Pinyin syllable "xiong4" is split up into two parts: "xu" and "(e)ng4". You can visit the Pinyin index to see how other Pinyin syllables are split up into initials and finals.
Mnemonics for Pinyin initial "xu"
Xu is for Xu Xian.
Mnemonics for Pinyin final "(e)ng4"
In the engine's bathroom.
