Day Pillars › Gui Si
Gui Si 癸巳 Day Pillar · Gyesa
Gui Si 癸巳 is morning mist lifting from a stream warmed by the Snake, the branch of early summer Fire. Intuitive and composed, it balances gentleness with a practical, well-organized mind.
- Day Master (stem)
- 癸 Gui · Yin Water
- Spouse palace (branch)
- 巳 Si · Fire Snake
- Hidden stems
- 戊 Wu (Direct Officer) · 庚 Geng (Direct Resource) · 丙 Bing (Direct Wealth)
- Twelve stage
- 胎 · 태 Conception
- Na Yin
- 長流水 Long River Water
- Void (공망)
- 午未 Horse and Goat
- Image
- Mist rising from a sunlit stream
Find your own day pillar from your birth date →
What is the Gui Si (癸巳) day pillar like?
Gui 癸 is Yin Water: dew, rain and mist. Si 巳 is the Fire branch of early summer warmth. Water controls Fire, so the stem manages what the branch offers. The main hidden stem, Bing 丙, is Gui's Direct Wealth, care for practical matters and steady management. Wu 戊 is Direct Officer, which combines with Gui, a bond with structure and responsibility, and Geng 庚 is Direct Resource, steady support and learning. Wealth, Officer and Resource all sit in one branch, a balanced trio that Korean readers find unusually orderly.
Korean readers call 계사 (Gyesa) the 검은 뱀 (geomeun baem), the black snake, a symbol of intuition and strategy. Gyesa people are described as perceptive, composed and resourceful, able to read situations precisely and act at the right moment. They have a gentle exterior and a well-organized mind. They enjoy learning and can turn knowledge into practical results. Like mist rising in sunlight, they move between feeling and logic with ease, and their calm presence reassures others. Friends trust Gyesa with secrets because it listens closely and without judgment.
What does the twelve-stage position mean for Gui Si?
Gui on Si sits at 胎 (태, tae), the Conception stage, the seed point of a new cycle. For Gyesa it is tied to imagination, receptiveness and a mind constantly forming new possibilities. It suggests potential that matures through patience and the right environment.
What is the Na Yin of Gui Si?
Gui Si shares the Na Yin 長流水, Long River Water, with Ren Chen. Here it suggests a modest mountain stream that grows into a long river: patient persistence that carries much farther than anyone expected.
How does Gui Si approach close relationships?
The spouse palace (배우자궁, baeujagung) of Gui Si holds Bing 丙 as Direct Wealth, the Ten God of steady devotion and practical care. Gyesa is drawn to warm, bright partners who bring sunshine to its calm nature. Wu as Direct Officer, combining with Gui, adds a strong sense of commitment. These bonds do well when Gyesa shares its inner world openly and both partners balance warmth with independence. Small, consistent gestures mean more to this pillar than dramatic ones. A partner who draws Gyesa out with curiosity, not pressure, earns its trust.
How does Gui Si work best?
Gyesa thrives in roles that combine intuition with organization: research, planning, counseling, education, administration, analysis, writing or public service. Its balanced Wealth, Officer and Resource stars bring comfort with structure, learning and practical results. Gui Si works best in calm, well-run environments where careful insight is valued and growth comes through steady learning. It also brings a calm, steadying presence to busy teams.
What are the strengths and blind spots of Gui Si?
- Intuitive insight — Gyesa reads people and situations with precision and calm.
- Organized mind — balanced Wealth, Officer and Resource stars support steady, reliable work.
- Adaptable grace — like mist, Gui Si moves easily between emotion and logic.
Things to watch
- Overthinking — setting a decision deadline keeps analysis from stretching too long.
- Hidden feelings — sharing inner thoughts out loud helps others understand and meet Gyesa's needs.
- Avoiding the spotlight — letting its contributions be seen helps others recognize its value.
Which day pillars are related to Gui Si?
Same Day Master: 癸酉 Gui You, 癸未 Gui Wei, 癸卯 Gui Mao, 癸丑 Gui Chou, 癸亥 Gui Hai.
Heaven-and-earth combination (천지합): 戊申 Wu Shen — its stem combines with 癸 and its branch forms a six-harmony pair with 巳, a pairing traditionally read as easy rapport. Compare two real charts on the compatibility page.
What does 계사 (Gyesa) mean in Korean Saju?
The thirtieth pair of the sixty-day cycle, 癸巳, reads 계사 (Gyesa) in Korean. 계 (Gye) is Yin Water and 사 (Sa) is the Snake, a Fire branch of early summer. Nicknamed the black snake, Gyesa is linked to people who are intuitive, composed and well-organized, with a gentle manner and a clear head for practical detail.
Is Gui Si a strong day pillar?
Gui sits on Fire, which it must manage, so the branch alone does not strengthen it. Geng Metal hidden in Si offers Resource support, though. Metal and Water elsewhere, or a winter birth, help balance it. Readers look at the full chart before judging strength.
What is the void (공망) of the Gui Si day pillar?
Gui Si closes the 甲申 ten-day group, the decade whose unpaired branches are 午 (Horse) and 未 (Goat). Korean readers call these its 공망 (gongmang), the empty or void branches. 午 is Fire, Gui's Wealth element, and 未 holds Earth, its Officer element, so a patient, unhurried approach to practical and structural matters is the usual suggestion. Void branches add nuance to a chart, not a ruling.
For entertainment and self-reflection only. Saju describes tendencies, not fixed outcomes, and nothing here is professional advice. Twelve stages, Na Yin and void branches follow standard Korean and Chinese almanac tables (checked against the independent library lunar-python); background: Sexagenary cycle (Wikipedia). Updated October 7, 2026.