摸黑 Words — Dong Chinese Dictionary

mōhēi

to grope in the dark

起早摸黑 qǐzǎomōhēi to work from dawn to dusk

To be very industrious; rising early and going to bed late to work.
两眼一摸黑 liǎngyǎnyīmōhēi helpless and disoriented

To be completely in the dark or at a loss in an unfamiliar situation; unable to see what is going on or how to proceed.
摸黑儿 mōhēir to grope in the dark

to do something or move about in the dark; to grope for one's way without a light