mineral vein; ore vein
Refers to a vein of minerals or ore running through rock. Used in geology and mining contexts.
A vein of gold runs through this mountain.
underground water channel; subterranean watercourse
Describes a natural channel or flow of water beneath the earth's surface. Often used in discussions of groundwater or feng shui.
They dig a well by searching for an underground water channel.
Compound of 地 (chi, 'earth, ground') and 脈 (myaku, 'vein, pulse'). The term literally means 'earth vein' and is used to describe vein-like formations of minerals or water underground.