Pinyin "si1"
In MandarinBanana's mnemonic system, the Pinyin syllable "si1" is split up into two parts: "s" and "Ø1". You can visit the Pinyin index to see how other Pinyin syllables are split up into initials and finals.
Mnemonics for Pinyin initial "s"
Socrates.
Mnemonics for Pinyin final "Ø1"
In front of the space station.
Characters pronounced si1
(bound form) together; each other / (bound form) male servant / (bound form) dude; so-and-so (used in 那廝|那厮[na4 si1] and 這廝|这厮[zhe4 si1])