画龙点睛

畫龍點睛
huàlóngdiǎnjīng
  1. to paint a dragon and dot in the eyes (idiom); fig. to add the vital finishing touch
  2. the crucial point that brings the subject to life
  3. a few words to clinch the point

CEDICT

Entry Composition

1 画 huà
  1. to draw; to paint
  2. to draw (a line) (variant of 划 huà)
  3. stroke of a Chinese character (variant of 划 huà)
  4. (calligraphy) horizontal stroke (variant of 划 huà)

classifiers: 幅, 張
2 龙 lóng
  1. Chinese dragon; loong
  2. (fig.) emperor
  3. dragon
  4. (bound form) dinosaur
3 点睛 diǎnjīng to add the finishing touch (abbr. for 画龙点睛 huàlóngdiǎnjīng)