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Jyutping sit3 soeng6 jam1
Pinyin shé shàng yīn

Definitions (Wiktionary)
  1. noun, Chinese
    any of the group of consonants represented by the Middle Chinese pronunciation the following 字母 (zìmǔ): 知 (/ʈ/), 徹/彻 (/ʈʰ/), 澄 (/ʈʰ/) and 娘 (/ɳ/)