業精於勤而荒於嬉

业精于勤而荒于嬉
yèjīngyúqínérhuāngyúxī

synonym of 業精於勤，荒於嬉 /业精于勤，荒于嬉 (yè jīng yú qín, huāng yú xī, “academic excellence is achieved through diligence, while studies are neglected and deteriorate when one frolics”)

Wiktionary

Entry Composition

1 業精於勤 yèjīngyúqín
  1. mastery of study lies in diligence (idiom). You can only master a subject by assiduous study.
  2. Excellence in work is only possible with diligence.
  3. Practice makes perfect.
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 荒 huāng
  1. desolate
  2. shortage
  3. scarce
  4. out of practice
  5. absurd
  6. uncultivated
  7. to neglect
=4 於 yú
  1. (of time or place) in; at; on
  2. (indicating any indirect relation) to; toward; vis-à-vis; with regard to; for
  3. (indicating a source) from; out of
  4. (used in comparison) than
  5. (used in the passive voice) by
=4 於 Yū
  1. surname Yu
  2. Taiwan pr. Yú
=4 於 wū
  1. (literary) Oh!
  2. Ah!
=5 嬉 xī amusement
=5 嬉 xǐ Used in personal names.