Radical Detail

abbr. for Heilongjiang province 黑龙江

black

dark

sinister

secret

shady

illegal

to hide (sth) away

to vilify

(loanword) to hack (computing)

night

hacker (computing) (loanword)

ruthless and lacking in conscience

vicious mind full of hatred and jealousy

black core (flaw in pottery)

(fig.) malign agent who manipulates from behind the scenes

hidden hand

(Tw) mechanic

blue-collar worker

manual laborer

dark

darkly

darkness

blackboard

black and white

right and wrong

monochrome

black

dark horse

fig. unexpected winner

tacit understanding

mutual understanding

rapport

connected at a deep level with each other

(of team members) well coordinated

tight

to read in silence

in silence; not speaking

obscure and unknown (idiom); an outsider without any reputation

a nobody

an unknown quantity