一气呵成 yī qì hē chéng

DEFINITIONS

  1. to do something at one go
  2. to flow smoothly

CHARACTERS

一 yī
HSK 1
one; a, an; alone
气 qì
HSK 1
steam, vapor; KangXi radical 84
呵 hē
HSK 6
scold; laughing sound; yawn
成 chéng
HSK 3
completed, finished, fixed