Pinyin "pin4"

In MandarinBanana's mnemonic system, the Pinyin syllable "pin4" is split up into two parts: "pi" and "(e)n4". You can visit the Pinyin index to see how other Pinyin syllables are split up into initials and finals.

Mnemonics for Pinyin initial "pi"

Pi is for Pocahontas.

Mnemonics for Pinyin final "(e)n4"

In the encampment's bathroom.

Characters pronounced pin4

聘
pìn = pi + (e)n4
to engage (a teacher etc) / to hire / to betroth / betrothal gift / to get married (of woman)
聘 = 甹 + 耳 : Pocahontas (pi) and a chivalrous knight (甹) betroth (聘) each other in the encampment's bathroom ((e)n4). As symbol of their love they give each other bloody ears (耳).
牝
pìn = pi + (e)n4
(of a bird, animal or plant) female / keyhole / valley