Sin-sa seats 辛, the Jewel, on 巳, the Snake: early summer, with 丙 Fire as the branch's main qi. Fire controls Metal, so this is Sin's Direct Officer (정관). And 丙 with 辛 is one of the five heavenly combinations (丙辛合). So your jewel is held in sunlight, bonded to the light that makes it sparkle. Picture a diamond on a sunny May afternoon, throwing rainbows across a room.
You are poised, principled and quietly magnetic. You care about doing the right thing and about how things look, and you see no contradiction in that. The Snake also holds 庚 Metal and 戊 Earth, giving you resilience and support. Classical writers would remind a summer Sin to find 壬 Water, the cool clear water that washes the jewel. Without it, you can feel overexposed: constantly evaluated, under pressure to be perfect, sparkling for an audience that never gets tired.


BomYou bring grace and integrity into every room. People trust you, and you make them feel elegant just by being nearby.
Sin-sa in love
Direct Officer in the spouse palace, plus the hidden 丙辛 combination, makes love a central theme for Sin-sa. You want a principled, admirable partner, someone you are proud to stand beside. You are loyal, elegant and devoted.
You may give a partner too much power over your self-image, or stay with someone because they look right on paper. Ask whether you feel seen or just displayed. Water types, expressive and calm, keep you cool and help you shine on your own terms.
As a friend
You are the poised friend who always knows what to say at a wedding or a funeral. You are loyal and discreet. You can be status-conscious or quietly judgmental. Your friends value your grace and know you would show up in a crisis, perfectly dressed.
Red flags
- You choose partners who look right instead of feeling right.
- You let someone else's approval set your worth.
- You perform perfection and collapse in private.
- You follow rules long after they stopped making sense.


YeonA partner who looks good in photos and makes you feel small is not a catch. Close the album and look at how you feel.
At work
Sin-sa is suited to roles where integrity meets presentation: law, diplomacy, PR, luxury brands, HR, public service, finance, event management. You are trusted and polished. Make sure the structure respects you as much as you respect it.
Sin-sa vs the other Sin Metal pillars
Sin-sa is the most principled and partnership-oriented Sin pillar, thanks to the Officer and hidden 丙辛 combination. Sin-hae (辛亥), its clash partner (巳亥), is washed in Water and rebellious where you are poised. Sin-yu (辛酉) is pure Metal and independent, Sin-myo (辛卯) fun and resource-minded, Sin-mi (辛未) and Sin-chuk (辛丑) sit on Resource Earth and are more inward. You look for a partner to admire; Sin-hae looks for one who can keep up with its wit.
Chart notes
Chart notes for Sin-sa: the 巳 Snake branch is Fire and hides 戊 (Direct Resource), 庚 (Rob Wealth), 丙 (Direct Officer), read from a Sin Metal point of view. Its main qi, 丙, puts Direct Officer (정관 正官) in the Sin-sa spouse palace. In branch relations, 巳 clashes with 亥 (Pig) and forms a six-harmony pair (육합) with 申 (Monkey), so a partner with a Pig or Monkey day branch will feel noticeably different to a Sin-sa person. 辛巳 is pillar 18 of the sixty in the 육십갑자 cycle.
FAQ
What is the hidden combination in Sin-sa?
The main hidden stem of 巳 is 丙 Fire, and 丙 with 辛 is a heavenly stem combination (丙辛合). It is read as a natural bond between you and your spouse palace.
Is Sin-sa a weak Day Master?
Fire in the branch controls Metal, so many Sin-sa charts lean weaker, though 巳 also holds 庚 Metal and 戊 Earth for support. Whether it tips weak or strong comes down to your other pillars.
What does Sin-sa need in love?
A principled partner who also lets you be imperfect. Water energy, calm and expressive, helps you relax.
The soul behind it
Sin-sa is one of six day pillars for Sin Metal, The Jewel. The soul page covers what all six share.