间不容发

jiān bù róng fà

(to escape danger etc) by a hair's breadth (idiom)

in a critical state; on the brink of crisis; very close (to happening); Taiwan pr. [jian4 bu4 rong2 fa3]

间

jiān

between

不

bù

no; not so

容

róng

to hold

发

fà

hair