昏天黑地

lit. dark sky and black earth (idiom) / fig. pitch dark / to black out / disorderly / troubled times

day / sky / heaven

-ly / structural particle: used before a verb or adjective, linking it to preceding modifying adverbial adjunct

earth / ground / field / place / land / CL:片[pian4]

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)

muddle-headed / twilight / to faint / to lose consciousness

old variant of 昏[hun1]

to get dark / dusk