浑水摸鱼

to fish in troubled water (idiom); to take advantage of a crisis for personal gain

muddy / to mix

surname Shui

water / river / liquid / beverage / additional charges or income / (of clothes) classifier for number of washes

to feel with the hand / to touch / to stroke / to grope / to steal / to abstract

variant of 摹[mo2]

to catch fish / (fig.) to loaf on the job / to be slack / to take it easy

surname Yu

fish / CL:條|条[tiao2],尾[wei3]