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Jyutping seon3 zin1
Pinyin xìn jiān

Definitions (CC-CEDICT)
  1. letter
  2. letter paper
Definitions (粵典–words.hk)
  1. x
Definitions (Wiktionary)
  1. noun
    letter paper; notepaper
    (syn.) 信纸, 便笺, 便箋, 信紙
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)