Correct
无间
/ wújiàn /
Strokes
Definition
very close/no gap between them/continuously/unbroken/hard to separate/indistinguishable
Example
As a Verb
there is no space in between—be very close to each other; not keep anything from each other
1
Wú
无
jiàn
间
kě
可
chéng
乘
there is no loophole/crack to take advantage of
As a Verb
be continuous/uninterrupted
2
Jiānchí
坚持
chénliàn
晨练
,
fēngyǔ
风雨
wú
无
jiàn
间
。
Keep on doing morning exercises in spite of bad weather.
As a Verb
make no difference/distinction
3
Wújiàn
无间
shìfēi
是非
make no distinction between right and wrong