除旧更新

除舊更新
chújiùgēngxīn
to replace the old with new (idiom)

CEDICT

去除旧的，换成新的。晋．竺僧朗〈又报南燕王慕容德〉：「彗者除旧更新之象，奎娄为鲁之分野。」也作「除旧布新」。

重編國語辭典

Entry Composition

1 除 chú
  1. to get rid of
  2. to remove
  3. to exclude
  4. to eliminate
  5. to wipe out
  6. to divide
  7. except
  8. not including
2 旧 jiù
  1. old
  2. opposite: new 新
  3. former
  4. worn (with age)
3 更新 gēngxīn
  1. to replace the old with new
  2. to renew
  3. to renovate
  4. to upgrade
  5. to update
  6. to regenerate

Related entries

更新 gēngxīn
  1. to replace the old with new
  2. to renew
  3. to renovate
  4. to upgrade
  5. to update
  6. to regenerate
請更新軟體。

Update your software.

Source: Tatoeba

咸与维新 xiányùwéixīn
  1. everyone participates in reforms (idiom)
  2. to replace the old with new
  3. to reform and start afresh