間不容髮 [间－－发]

Jyutping gaan3 bat1 jung4 faat3
Pinyin jiān bù róng fà

Definitions (CC-CEDICT)
  1. (to escape danger etc) by a hair's breadth (idiom)
  2. in a critical state
  3. on the brink of crisis
  4. very close (to happening)
  5. Taiwan pr. [jian4 bu4 rong2 fa3]