黑盒子

black; dark; sinister; secret; shady; illegal; to hide away; to vilify; to hack (computing); short for Heilongjiang province.

A small box or case; a container with a lid; also used as a measure word for items packed in boxes.

Son; child; offspring; seed; noun suffix attached to nouns, verbs, adjectives, or classifiers; first of the twelve earthly branches; ancient Chinese compass point for north.