Pinyin "ru4"
In MandarinBanana's mnemonic system, the Pinyin syllable "ru4" is split up into two parts: "ru" and "Ø4". You can visit the Pinyin index to see how other Pinyin syllables are split up into initials and finals.
Mnemonics for Pinyin initial "ru"
Ru is for Rachel Rhinoceros.
Mnemonics for Pinyin final "Ø4"
In the space station's bathroom.
Characters pronounced ru4
to enter / to go into / to join / to become a member of / to confirm or agree with / abbr. for 入聲|入声[ru4 sheng1]