滴水不漏

lit. not one drop of water can leak out / watertight / rigorous (argument)

a drop / to drip

water drop / dripping water

surname Shui

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

no; not so / (bound form) not; un-

to leak / to divulge / to leave out by mistake / waterclock or hourglass (old)