青出于蓝而胜于蓝

青出於藍而勝於藍
qīngchūyúlánérshèngyúlán
  1. lit. the color blue is made out of indigo but is more vivid than indigo (idiom)
  2. fig. the student surpasses the master

CEDICT

Entry Composition

1 青出于蓝 qīngchūyúlán
  1. (figurative) the student has surpassed his or her teacher
  2. the student has surpassed his or her teacher
2 而 ér
  1. and
  2. as well as
  3. and so
  4. but (not)
  5. yet (not)
  6. (indicates causal relation)
  7. (indicates change of state)
  8. (indicates contrast)
3 胜于 shèngyú to be better than; to be superior to
4 蓝 lán
  1. blue
  2. indigo plant