文不加點 [－－－点]

Jyutping man4 bat1 gaa1 dim2
Pinyin wén bù jiā diǎn

Definitions (CC-CEDICT)
  1. to write a flawless essay in one go (idiom)
  2. to be quick-witted and skilled at writing compositions
Definitions (Wiktionary)
  1. phrase, idiomatic
    to write a flawless essay in one go; to be quick-witted and skilled at writing compositions
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）