1 abbr. for Heilongjiang province 黑龍江|黑龙江[Hēi lóng jiāng]

1 night

1 dark

2 darkly

3 darkness

1 dark circles (under one's eyes)

2 black eye

1 criminal underworld

2 organized crime syndicate

1 lit. to follow one road until dark (idiom)

2 fig. to stick to one's ways

3 to cling to one's course

1 all crows are black (idiom)

2 evil people are bad all over the world

1 A small hole not plugged will make you suffer a big hole (idiom); A stitch in time saves nine.

1 a small hole not plugged will give you grief when it gets bigger (idiom)

2 a stitch in time saves nine

1 If you don't plug the small hole, the big hole will be hard to repair (idiom); A stitch in time saves nine.