Bazi
how-to-calculate-ziwei-chart
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Published 2026-03-22
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Sources ↗All content is grounded in classical Chinese metaphysics texts (Di Tian Sui, Yuan Hai Zi Ping, Yi Jing) and peer-reviewed by certified practitioners before publication.
{
"heading": "How to Calculate Zi Wei Dou Shu Chart: Step-by-Step Tutorial",
"body": "Calculating a Zi Wei Dou Shu chart may seem daunting at first, but with systematic steps and understanding of the underlying principles, anyone can learn to construct this powerful destiny map. This comprehensive tutorial will guide you through each step of the chart calculation process.\n\n## Prerequisites\n\nBefore beginning the calculation, you need:\n- Exact birth date (year, month, day)\n- Exact birth time (hour and minute)\n- Birth location (for time zone adjustment)\n- Chinese lunar calendar conversion table\n\n## Step 1: Convert to Lunar Calendar\n\nThe first step involves converting your Western calendar birth date to the Chinese lunar calendar. This conversion is essential because Zi Wei Dou Shu operates on lunar time.\n\nFor example, if you were born on January 15, 1990, you need to find the corresponding lunar date. In this case, it would be the 19th day of the 12th lunar month of the Year of the Snake.\n\n## Step 2: Establish the Life Palace (An Ming Gong)\n\nThe Life Palace is the foundation of your entire chart. Its position is determined by your lunar birth month and birth hour.\n\n### Method:\n1. Start counting from the Yin (Tiger) position as month 1\n2. Count clockwise to your birth month\n3. From that position, count counterclockwise to your birth hour\n4. The final position is your Life Palace\n\nThe twelve Earthly Branches positions are: Zi (Rat), Chou (Ox), Yin (Tiger), Mao (Rabbit), Chen (Dragon), Si (Snake), Wu (Horse), Wei (Goat), Shen (Monkey), You (Rooster), Xu (Dog), Hai (Pig).\n\n## Step 3: Determine the Body Palace (An Shen Gong)\n\nThe Body Palace represents your physical existence and later life fortune. It is calculated based on your lunar birth month:\n\n- Month 1, 7: Body Palace in Zi\n- Month 2, 8: Body Palace in Chou\n- Month 3, 9: Body Palace in Yin\n- Month 4, 10: Body Palace in Mao\n- Month 5, 11: Body Palace in Chen\n- Month 6, 12: Body Palace in Si\n\n## Step 4: Arrange the Twelve Palaces\n\nOnce the Life Palace is established, arrange the remaining eleven palaces in fixed order counterclockwise:\n\n1. Life Palace (Ming Gong)\n2. Siblings Palace (Xiong Di Gong)\n3. Spouse Palace (Fu Qi Gong)\n4. Children Palace (Zi Nu Gong)\n5. Wealth Palace (Cai Bo Gong)\n6. Health Palace (Ji E Gong)\n7. Travel Palace (Qian Yi Gong)\n8. Friends Palace (Jiao You Gong)\n9. Career Palace (Guan Lu Gong)\n10. Property Palace (Tian Zhai Gong)\n11. Fortune Palace (Fu De Gong)\n12. Parents Palace (Fu Mu Gong)\n\n## Step 5: Determine the Five Elements Bureau (Ding Wu Xing Ju)\n\nThe Five Elements Bureau affects the brightness and power of stars in your chart. It is determined by the Heavenly Stem of the Life Palace.\n\n### Bureau Types:\n- Water 2 Bureau (Shui Er Ju)\n- Wood 3 Bureau (Mu San Ju)\n- Metal 4 Bureau (Jin Si Ju)\n- Earth 5 Bureau (Tu Wu Ju)\n- Fire 6 Bureau (Huo Liu Ju)\n\nThe bureau number also determines the starting age for your first Decade Luck period.\n\n## Step 6: Place the Zi Wei Star (An Zi Wei Xing)\n\nThe Zi Wei star placement is crucial as all other star positions derive from it. The formula uses your lunar birth day and Five Elements Bureau.\n\n### Calculation Formula:\n1. Take your lunar birth day\n2. Adjust based on your bureau number\n3. Count from the Yin position to find Zi Wei's location\n\nThe exact formula varies by school, but the general principle is:\n- For Water 2 Bureau: Birth day divided by 2\n- For Wood 3 Bureau: Birth day divided by 3\n- For Metal 4 Bureau: Birth day divided by 4\n- For Earth 5 Bureau: Birth day divided by 5\n- For Fire 6 Bureau: Birth day divided by 6\n\nThe remainder determines the position, with special rules for remainders of 0.\n\n## Step 7: Place the Tian Fu Star (An Tian Fu Xing)\n\nTian Fu always sits opposite to Zi Wei in a specific pattern. Once Zi Wei is placed, Tian Fu's position is automatically determined by mirroring across the chart axis.\n\n## Step 8: Arrange the Fourteen Major Stars\n\nThe fourteen major stars (Shi Si Zhu Xing) are divided into two groups:\n\n### Zi Wei Group (8 stars):\n1. Zi Wei (Purple Star)\n2. Tian Ji (Heavenly Machine)\n3. Lian Zhen (Pure Virtue)\n4. Tian Tong (Heavenly Unity)\n5. Tian Fu (Heavenly Minister)\n6. Tai Yin (Moon)\n7. Tan Lang (Greedy Wolf)\n8. Ju Men (Giant Gate)\n\n### Tian Fu Group (6 stars):\n1. Tian Fu (Heavenly Minister)\n2. Tai Yang (Sun)\n3. Wu Qu (Military Curve)\n4. Tian Tong (Heavenly Unity)\n5. Lian Zhen (Pure Virtue)\n6. Tian Ji (Heavenly Machine)\n\nEach star follows specific placement rules based on the position of Zi Wei and Tian Fu.\n\n## Step 9: Add Auxiliary Stars\n\nAuxiliary stars enhance or modify the influence of major stars:\n\n### Beneficial Stars:\n- Zuo Fu (Left Assistant)\n- You Bi (Right Assistant)\n- Wen Chang (Literary Star)\n- Wen Qu (Arts Star)\n- Tian Kui (Heavenly Noble)\n- Tian Yue (Heavenly Virtue)\n\n### Challenging Stars:\n- Qing Yang (Green Yang)\n- Tuo Luo (Spinning Star)\n- Huo Xing (Fire Star)\n- Ling Xing (Bell Star)\n- Di Kong (Earth Void)\n- Di Jie (Earth Robbery)\n\n## Step 10: Apply the Four Transformers (An Si Hua)\n\nThe Four Transformers change based on the year's Heavenly Stem:\n\n- Jia Year: Lian Zhen Hua Lu, Po Jun Hua Quan, Wu Qu Hua Ke, Tai Yang Hua Ji\n- Yi Year: Tian Ji Hua Lu, Tian Liang Hua Quan, Zi Wei Hua Ke, Tai Yin Hua Ji\n- Bing Year: Tian Tong Hua Lu, Tian Ji Hua Quan, Wen Chang Hua Ke, Lian Zhen Hua Ji\n- And so on for each Heavenly Stem\n\n## Step 11: Calculate Decade Luck Periods\n\nDecade Luck (Da Xian) periods begin at an age determined by your Five Elements Bureau:\n- Water 2 Bureau: Starts at age 2\n- Wood 3 Bureau: Starts at age 3\n- Metal 4 Bureau: Starts at age 4\n- Earth 5 Bureau: Starts at age 5\n- Fire 6 Bureau: Starts at age 6\n\nThe direction (clockwise or counterclockwise) depends on the Yin/Yang nature of your birth year.\n\n## Verification and Common Mistakes\n\nAlways verify your calculations:\n- Double-check lunar calendar conversion\n- Confirm birth time accuracy (2-hour Chinese时辰)\n- Ensure proper palace sequence\n- Validate star placements against reference charts\n\nCommon mistakes include:\n- Incorrect time zone adjustment\n- Wrong lunar month calculation\n- Miscounting palace positions\n- Confusing clockwise and counterclockwise sequences\n\n## Practice Tips\n\nMastering Zi Wei Dou Shu calculation requires practice:\n1. Start with your own chart for verification\n2. Use software to check manual calculations\n3. Study multiple charts to recognize patterns\n4. Keep detailed notes of your calculations\n5. Join study groups for knowledge exchange\n\n## Conclusion\n\nCalculating a Zi Wei Dou Shu chart is both an art and a science. While the steps may seem complex initially, consistent practice will make the process intuitive. Understanding the calculation method deepens your appreciation for this ancient system and enhances your interpretation skills. Remember that accurate birth data is crucial for reliable chart analysis.\n\n## Frequently Asked Questions\n\n### What is the most important pillar in a Bazi chart?\n\nThe Day Pillar is considered the most important as the Day Master (日主) — the Heavenly Stem of the Day Pillar — represents the self. All other elements in the chart are interpreted in relation to the Day Master to determine personality, relationships, career, and destiny patterns.\n\n### How accurate is Bazi destiny analysis?\n\nBazi accuracy depends heavily on having the correct birth time. Even a one-hour difference can change the Hour Pillar and affect the entire chart reading. With accurate birth data, experienced Bazi practitioners can identify personality traits, career tendencies, and major life event timing with notable precision.\n\n### How does Bazi differ from Western astrology?\n\nBazi uses the Chinese Solar Calendar and focuses on Four Pillars derived from birth year, month, day, and hour — each represented by two characters. Western astrology uses planetary positions at birth. Bazi emphasizes Five Element balance and Luck Pillar timing, while Western astrology focuses on planetary archetypes and transits.\n\n### What are the Ten Gods in Bazi analysis?\n\nThe Ten Gods (十神) are ten archetypal relationship patterns between the Day Master and each other element in the chart: Direct Wealth, Indirect Wealth, Direct Officer, Seven Killings, Direct Resource, Indirect Resource, Eating God, Hurting Officer, Friend, and Rob Wealth. They reveal how different life areas (career, money, relationships) manifest.\n\n## Explore More Bazi Tools\n\n- [Free Bazi Calculator](/bazi/calculator) — Generate your Four Pillars chart\n- [Bazi Compatibility](/bazi/compatibility) — Relationship analysis\n- [Bazi Chart Reading](/bazi/reading) — Professional interpretation guide\n- [Learn Bazi](/learning/bazi) — Complete study curriculum",
"faqs": [
{
"question": "What is the most important pillar in a Bazi chart?",
"answer": "The Day Pillar is considered the most important as the Day Master (日主) — the Heavenly Stem of the Day Pillar — represents the self. All other elements in the chart are interpreted in relation to the Day Master to determine personality, relationships, career, and destiny patterns."
},
{
"question": "How accurate is Bazi destiny analysis?",
"answer": "Bazi accuracy depends heavily on having the correct birth time. Even a one-hour difference can change the Hour Pillar and affect the entire chart reading. With accurate birth data, experienced Bazi practitioners can identify personality traits, career tendencies, and major life event timing with notable precision."
},
{
"question": "How does Bazi differ from Western astrology?",
"answer": "Bazi uses the Chinese Solar Calendar and focuses on Four Pillars derived from birth year, month, day, and hour — each represented by two characters. Western astrology uses planetary positions at birth. Bazi emphasizes Five Element balance and Luck Pillar timing, while Western astrology focuses on planetary archetypes and transits."
},
{
"question": "What are the Ten Gods in Bazi analysis?",
"answer": "The Ten Gods (十神) are ten archetypal relationship patterns between the Day Master and each other element in the chart: Direct Wealth, Indirect Wealth, Direct Officer, Seven Killings, Direct Resource, Indirect Resource, Eating God, Hurting Officer, Friend, and Rob Wealth. They reveal how different life areas (career, money, relationships) manifest."
}
]
}
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