串通一气

串通一氣
chuàntōngyīqì
to act in collusion (idiom)

CEDICT

to work hand in glove; to act in collusion

Wiktionary

彼此勾结联络，立场、行动一致。

重編國語辭典

Entry Composition

1 串通 chuàntōng
  1. to collude
  2. to collaborate
  3. to gang up
2 一气 yīqì
  1. at one go
  2. at a stretch
  3. for a period of time
  4. forming a gang