黑客

hacker (computing) (loanword)

abbr. for Heilongjiang province 黑龍江|黑龙江[Hei1 long2 jiang1]

black / dark / sinister / secret / shady / illegal / to hide (sth) away / to vilify / (loanword) to hack (computing)

customer / visitor / guest

hackathon (loanword)

The Matrix (1999 movie)

hacker terminology / leetspeak