事到临头

事到臨頭
shìdàolíntóu
when things come to a head (idiom)

CEDICT

事情发展到需要解决的时刻。

重編國語辭典

Entry Composition

1 事 shì
  1. matter
  2. thing
  3. item
  4. work
  5. affair

classifiers: 件, 樁, 回
2 到 dào
  1. to reach; to arrive
  2. to leave for; to go to
  3. to (a place); until (a time); up to (a point)
  4. (verb complement indicating arriving at a place or reaching a point)
  5. considerate; thoughtful; thorough
3 临头 líntóu
  1. to befall
  2. to be imminent