綠水

green water / crystal-clear water

green / (slang) (derived from 綠帽子|绿帽子[lü4 mao4 zi5]) to cheat on (one's spouse or boyfriend or girlfriend)

surname Shui

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

lit. green hills and clear waters / pleasant country scene (idiom)