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Jyutping baat3 hang4 syu1
Pinyin bā háng shū

Definitions (CC-CEDICT)
  1. formal recommendation letter in eight columns
Definitions (Wiktionary)
  1. noun, literary
    letter; epistle; written message
    (syn.) 信札, 书简, 信, 信件, 書, 信函, 书牍, 八行, 书札, 筆札, 書札, 简, 书函, 函件, 书信, 笔札, 书, 書函, 書牘, 手书, 手簡, 鴻, 鸿, 手書, 手简, 書信, 簡, 書簡