跋山涉水

to travel over land and water (idiom)

postscript / to trek across mountains

mountain / hill / anything that resembles a mountain / CL:座[zuo4] / bundled straw in which silkworms spin cocoons / gable

(literary) to wade across a body of water / (bound form) to experience / to undergo / to be involved / to concern

surname Shui

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