Short answer
The Mountain is the Korean birthday type of people born on a yang Earth day (Mu Earth, 戊). In love: calm, solid and protective. Slow to start, very hard to move, and shows love by quietly taking care of things.

Ex
Why a Mountain ex rarely comes back, and what it means when they do
A Mountain ex usually does not come back once they have decided it is over, because they move slowly and stay put; when they do return, it is a deliberate choice they have thought about for a long time.
Read itSituationship
The Mountain in a situationship: loyal in action, silent in words
A Mountain in a situationship is often more committed than they say, showing loyalty through steady actions, but they rarely put it into words unless asked directly.
Read itGhosting
Does a Mountain ghost? Why the hill suddenly isn't there
A Mountain does not usually ghost out of drama; they stop responding when they feel played or disrespected, and once they have quietly withdrawn, they rarely come back.
Read itRed flags
Mountain red flags: steady, loyal, and very hard to move
The main Mountain red flags are staying out of duty instead of love, showing feelings only through actions, and stubbornness about small things; their loyalty is real, but so is the immovability.
Read itCrush
How a Mountain acts with a crush: slow, steady and very helpful
A Mountain with a crush shows it by being consistently there: helping, protecting and staying close, while taking a very long time to say anything out loud.
Read itWho the Mountain gets along with
In saju compatibility, the Mountain clicks most easily with:
- The Rain (86/100): Heavenly Combination 戊癸: mist on the mountain
- The Candle (80/100): A lantern in the mountain temple: warm, quiet, lasting
In saju compatibility, the Mountain has the most homework with:
- The Tall Pine (50/100): The tree and the mountain: both immovable, both sure they are the landscape
- The Ocean (51/100): The dam and the river: control versus flow
Full profile: The Mountain personality, work and friends. Every pairing: compatibility.