Antoine Lavoisier, the founder of modern chemistry, is hailed as the "Father of Modern Chemistry." Through precise quantitative experiments, he established the law of conservation of mass, proposed the oxygen theory of combustion to overthrow the phlogiston theory, named oxygen and hydrogen, and wrote the first modern chemistry textbook, Traité Élémentaire de Chimie. His scientific contributions were epoch-making, yet he was executed during the French Revolution over tax-related issues.
BaZi (Ba Zi) Chart
Year Pillar Direct Wealth (Zheng Cai) Gui (癸) Hai (亥) Indirect Wealth Seven Killings · Month Pillar Eating God (Shi Shen) Geng (庚) Shen (申) Eating God Indirect Wealth Friend Day Pillar Day Master Wu (戊) Zi (子) Direct Wealth · · Hour Pillar Direct Resource (Zheng Yin) Ding (丁) Si (巳) Indirect Resource Eating God Friend
Birth Hour Verification
The Day Master is Wu Earth, born in the Shen month, where the Eating God holds the Month Command. Metal and Water are both flourishing in the entire chart, making the Day Master weak. The key to selecting the birth hour lies in whether it can strengthen the Day Master and form a structure that matches his achievements and fate. For the Zi hour (0:00) and Chou hour (2:00), Wealth is too heavy; the structure becomes either a Follow Wealth structure or a Weak Day Master with Flourishing Wealth, which indicates wealth but struggles to match his pioneering academic status. For the Yin hour (4:00) and Mao hour (6:00), Officer and Killings attack the Day Master, creating excessive pressure, which does not align with his mid-life success and innovative reforms. The Chen hour (8:00) has Resource and Friend elements but lacks sufficient strength. The Si hour (10:00) serves as the critical turning point: the Hour Pillar Ding Si is a pure column of Direct Resource, forming the noble structure of the "Eating God Adorned by Resource" (Shi Shen Pei Yin). This structure uses the Resource element to support the weak Day Master while harnessing the talent and wisdom of the Eating God from the Month Command, perfectly matching Lavoisier's image as the founder of systematic chemistry—possessing both profound analytical power (Resource) and outstanding experimental and innovative abilities (Eating God). During the Ding Si and Bing Chen Luck Pillars, where Resource is strong, his scientific achievements exploded, marking the golden period that established his status. Conversely, the Yi Mao Direct Officer Luck Pillar (1789–1798) brought Officer to restrain the Day Master, obstructing the flow of Wealth, Officer, and Resource, corresponding precisely to his trial and execution during the French Revolution. No other birth hour can so clearly align with his dramatic life trajectory and core achievements.
Core Analysis
Antoine Lavoisier's BaZi consists of Gui Hai, Geng Shen, Wu Zi, and Ding Si. The Day Master is Wu Earth, born in the Shen month, where the Eating God holds the Month Command. Metal and Water are both flourishing, making the Day Master undeniably weak. The brilliance lies in the Hour Pillar Ding Si: Direct Resource is pure and closely supports the Day Master, forming the noble structure of the Eating God generating Wealth paired with Resource. This structure indicates transcendent intelligence, capable of systematizing and theorizing talent (Eating God) via the Resource element, and converting it into practical achievements and reputation (Wealth).
The Month Pillar Geng Shen features a strong Eating God, representing his extraordinary scientific research and logical reasoning abilities—the core driving force behind overturning the old theory (phlogiston) and establishing a new system (the oxygen theory). The Year Pillar Gui Hai Direct Wealth is rooted in the Day Branch, supported by the Eating God, indicating that he not only pursued truth but was also adept at applying knowledge to practical ends (such as reforming the gunpowder industry and establishing the metric system), thereby acquiring wealth and social status (as a tax farmer). However, strong Wealth generates Killings, and the Jia Wood Seven Killings hidden in the Year Branch Hai forms a half three-harmony water frame with the Day Branch Zi, planting the hidden danger of disaster brought by wealth and a reckoning by authority (Officer and Killings).
Examining his Luck Pillars, from youth to middle age, he moved through the Wu Wu and Ding Si pillars of strong Fire and Earth, where Resource and Friend supported the Day Master—precisely the golden period when his academic achievements surged and his reputation peaked. However, in 1789, he entered the Yi Mao Direct Officer Luck Pillar. Mixed Officer and Killings attacked the Day Master as Water and Wood surged, thoroughly clashing with his favorable element Ding Si in the Hour Pillar. In 1794 (Jia Xu), Seven Killings revealed itself in the Heavenly Stem, directly triggering the chart's hidden dangers. Ultimately, he was sent to the guillotine amidst the frenzy of the French Revolution, perfectly fulfilling the calamity of a weak Day Master unable to withstand Wealth and Officer.
Trait Analysis
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Intelligence and Creativity The Month Pillar Geng Shen features a strong Eating God acting as a favorable element, representing his top-tier logical reasoning and scientific innovation abilities—the core source of his disruptive theories.
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Pragmatism and Pioneering Spirit The structure of the Eating God generating Wealth allowed him to translate abstract thought into concrete results (such as naming elements and creating the metric system), combining the pragmatic traits of both a scholar and a reformer.
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Systematic Thinking The Ding Si Direct Resource in the Hour Pillar closely supported him, endowing him with powerful abilities in induction, summarization, and system construction. This is why he was able to write Traité Élémentaire de Chimie and lay down the disciplinary framework.
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A Tumultuous Fate With a weak Day Master facing strong Wealth and Officer, his wealth and status concealed hidden dangers. When the Luck Pillars and Annual Pillars triggered Officer and Killings to attack the Day Master, he suffered ruthless blows, ultimately meeting a tragic end.
Life Timeline
1760 Luck Pillar Wu Wu Annual Pillar Geng Chen Luck Pillar Wu Wu Annual Pillar Geng Chen Favorable Fire and Earth Three-harmony water frame Age 17
The Spark of Knowledge Ignites, Opening the Door to the Scientific World
During his final two years of study at the Collège Mazarin, Lavoisier developed a keen interest in chemistry, botany, astronomy, and mathematics. Under the influence of the astronomer La Caille, he cultivated rigorous meteorological observation habits, laying the earliest cognitive and observational foundation for his future as the "Father of Modern Chemistry."
BaZi Analysis This year, Lavoisier was in the Wu Wu Luck Pillar. The Heavenly Stem Wu Earth Friend was revealed, and the Earthly Branch Wu Fire Direct Resource served as its root—precisely a decade where the favorable elements (Fire and Earth) in his chart erupted. The Wu Fire Resource governed the opening of wisdom, acquiring mentors, and exploring new cognitive fields. The annual pillar Geng Chen, although the Heavenly Stem Geng Metal Eating God was unfavorable, sat on the Earthly Branch Chen Earth Friend, a favorable element. Furthermore, it formed a powerful Shen-Zi-Chen three-harmony water frame with the Month Pillar Shen and Day Pillar Zi, activating the Wealth element. Although this frame brought strong unfavorable Water, the water frame nourished the Luck Pillar's Wu Fire, creating an indirect flow of "Wealth generating Officer (Killings) generating Resource." Ultimately, the energy converged on the Resource element (Fire), symbolizing that his vigorous thirst for knowledge and spirit of exploration received powerful support from timing (Luck Pillar) and allies (mentors), officially opening the path of enlightenment to the halls of science.
1764 Luck Pillar Wu Wu Annual Pillar Jia Shen Favorable Fire and Earth Eating God generating Wealth Heavenly Officer symbolic star National Seal and Literature symbolic stars Age 21
The First Resounding Note of an Academic Career
Lavoisier submitted a paper to the French Academy of Sciences on the chemical and physical properties of gypsum. This was his first formally published scientific work, marking the official beginning of his academic career.
BaZi Analysis This year, Lavoisier was in the Wu Wu Luck Pillar. The Heavenly Stem Wu Earth Friend was revealed, and the Earthly Branch Wu Fire Direct Resource served as its root—precisely the Fire and Earth energy favored by his chart. The Wu Fire Resource strongly nourished the Day Master, representing the opening of new cognitive fields and acquiring academic backing. The annual pillar Jia Shen revealed Seven Killings in the stem, which brought pressure, but Jia Wood Seven Killings happened to be the regulating element, able to stimulate his fighting spirit and pioneering drive. The annual Earthly Branch Shen Metal formed a Si-Shen combination with the Month and Hour Pillars, transforming into Water and activating the Eating God and Wealth, translating internal talent (Eating God) into practical achievements (Wealth). At the same time, the annual symbolic stars gathered the National Seal, Literature, and Heavenly Kitchen stars, indicating official recognition, a wellspring of literary thought, and academic inspiration. The Luck Pillar's Heavenly Officer symbolic star foretold a grand career blueprint. With multiple auspicious signs converging, he took a solid first step on his academic path.
1768 Luck Pillar Wu Wu Annual Pillar Wu Zi Wu Wu Luck Pillar - Emperor's Prosperity Wu Zi Annual Pillar - Fu Yin Favorable elements Fire and Earth gain ground Heavenly Officer symbolic star General Star Age 25
A Young Talent Ascends to the Hall of Science
At just 25 years of age, Lavoisier was appointed a provisional member of the French Academy of Sciences, officially joining the core circle of the French scientific community and launching his brilliant academic career.
BaZi Analysis This year, Lavoisier was in the Wu Wu Luck Pillar (1759–1768). Both the stem and branch of the Luck Pillar were his favorable elements, Fire and Earth, representing the strongest "Emperor's Prosperity" stage of his life's energy, where personal self-worth and drive reached their peak. The annual stem Wu Earth Friend revealed itself, signifying peer recognition and collaborative opportunities. Although the branch Zi Water was a Wealth element, it clashed with the Wu Fire of the Luck Pillar, activating the entire chart. This clash represents the imagery of "Water and Fire in Harmony," stimulating transformation and breakthroughs. The Annual Pillar formed a Fu Yin (repeated pillar) with the Day Pillar Wu Zi, meaning he received significant resonance and status confirmation in his original field (the Day Pillar represents the self and foundation). The Luck Pillar and Annual Pillar respectively activated the Heavenly Officer symbolic star and General Star, denoting a grand career blueprint and suitability for holding key roles in authoritative institutions. With the chart's Eating God generating Wealth, his talent was displayed and recognized on an official platform (the Academy of Sciences)—the inevitable outcome driven jointly by the favorable elements of the Luck Pillar and Annual Pillar.
1769 Luck Pillar Ding Si Annual Pillar Ji Chou Ding Si Direct Resource Luck Pillar Favorable elements gain ground Directional water frame National Seal symbolic star Age 26
Expanding Territory: Drawing the National Geological Blueprint
In this year, you led a team to successfully produce France's first systematic geological map, laying a scientific foundation for the understanding and development of national mineral resources and demonstrating outstanding organizational skills and foresight.
BaZi Analysis This year, you are in the Ding Si Direct Resource Luck Pillar, where both the stem and branch are your favorable Fire, representing cognition, reputation, and official support. The annual pillar Ji Chou, although Rob Wealth, forms a Hai-Zi-Chou directional water frame in the branches. This converges the strong Wealth energy in your chart, where Wealth represents resources and value. This directional frame activated the Year Pillar (the national, macro level) and the Day Pillar (the self), meaning you tightly integrated your personal talent (Eating God) with national resources (Wealth). The annual pillar encountering the National Seal symbolic star indicates that your efforts and credibility received official recognition. The interaction between the Luck Pillar and Annual Pillar strongly activated the energy of Resource (knowledge, backing) and Wealth (resources, value), making it the perfect time to transform professional knowledge into national strategic achievements.
1770 Luck Pillar Ding Si Annual Pillar Geng Yin Ding Si Direct Resource Luck Pillar Geng Yin Eating God Annual Pillar Shen-Si-Yin three-way punishment Regulating Bing Fire appears Age 27
Using the Power of Fire and Earth to Shatter a Millennial Water Theory
Through rigorous experiments lasting 543 days, he used irrefutable data to prove that the loss of mass in a closed vessel was equal to the mass of the solid precipitate formed, decisively overturning the then-prevalent "water turns into earth" theory and causing a massive stir in the scientific community.
BaZi Analysis This year fell within the Ding Si Direct Resource Luck Pillar. The Luck Pillar's Heavenly Stem Ding Fire Direct Resource combined with the Hour Pillar's Heavenly Stem Ren Water Indirect Wealth, activating the wisdom and symbolic star energy of the Hour Pillar. The annual stem Geng Metal Eating God was revealed, indicating that his talent, technical skill, and rigorous thinking were brought to their fullest expression. Hidden within the annual branch Yin Wood was Bing Fire Indirect Resource, the regulating element, representing an entirely new cognitive and theoretical breakthrough. Crucially, the annual branch Yin, the Luck Pillar branch Si, and the Month Pillar branch Shen formed a Shen-Si-Yin three-way punishment. This punished and activated the Month Pillar's Eating God and Traveling Horse symbolic star, representing an immense internal drive and intellectual tension that compelled him to use extraordinary patience (Eating God) and action (Traveling Horse) to challenge and overturn established authority (the prevailing views represented by the Year Pillar's Wealth) through repeated experiments (the imagery of the punishment). Both the Luck Pillar and Annual Pillar supported his favorable Fire and Earth elements, endowing him with firm conviction (Earth) and clear logic (Fire), ultimately allowing him to complete this landmark scientific refutation.
1771 Luck Pillar Ding Si Annual Pillar Xin Mao Ding Si Direct Resource Luck Pillar Ren-Ding combines into Wood Annual Pillar punishes the Spouse Palace Heavenly Kitchen symbolic star Age 28
A Good Match: Marrying a Capable Wife
He married Marie-Anne Pierrette, the daughter of a colleague (then 13 years old). She was not merely a life partner but later became an indispensable assistant in his scientific career, responsible for translation, illustration, and organizing experimental records.
BaZi Analysis This year fell within the Ding Si Direct Resource Luck Pillar. The Luck Pillar's Heavenly Stem Ding Fire Direct Resource combined with the Hour Pillar's Heavenly Stem Ren Water Indirect Wealth (Ren-Ding combining into Wood), an imagery of "Resource combining with Wealth," meaning that a romantic connection was forged through knowledge, documents, or elder relationships. His wife (Wealth) became closely tied to his own learning and career (Resource). The annual Xin Mao featured the Mao Wood Direct Officer forming a Zi-Mao punishment with the Day and Hour Branches (Zi Water), activating the Spouse Palace and Children Palace—a strong signal for starting a family. Although the punishment brought some turbulence (such as secular scrutiny over their age difference), the convergence of the Heavenly Kitchen symbolic star from the Luck Pillar, and the Heavenly Nobleman and Literature symbolic stars from the Annual Pillar foretold that his wife was intelligent and virtuous, capable of providing immense assistance in documentation and technical skills—the very image of a "wise wife and noble children."
1775 Luck Pillar Ding Si Annual Pillar Yi Wei Direct Resource Luck Pillar Annual Pillar combining with Officer Favorable elements Fire and Earth Heavenly Nobleman symbolic star Age 32
Heading the Royal Gunpowder Bureau: Forging a National Asset Through Innovation
He was appointed Director of the Royal Gunpowder Bureau, leading reforms in the gunpowder industry. By improving key processes such as saltpeter purification, he significantly enhanced the quality and power of French black powder, laying a solid technical foundation for strengthening the nation's military might.
BaZi Analysis This year fell within the Ding Si Direct Resource Luck Pillar. The Luck Pillar's Heavenly Stem Ding Fire Direct Resource combined with the Hour Pillar's Heavenly Stem Ren Water Indirect Wealth, indicating that he acquired official resources and recognition (combining with Wealth) through professional skills (Resource). The annual Yi Wei featured the Heavenly Stem Yi Wood Direct Officer combining with the Month Pillar's Heavenly Stem Geng Metal Eating God, forming a structure of "Officer combining with my Eating God." The Eating God represents technology and talent, while the Direct Officer represents official positions and responsibilities. This combination perfectly mirrored his appointment to an authoritative role (Director of the Royal Gunpowder Bureau) due to his technical expertise (Eating God). The annual Earthly Branch Wei Earth is Rob Wealth, a favorable element for the Wu Earth Day Master, enhancing his sense of responsibility and executive capability. The Earthly Branches Si and Wei in the Luck Pillar and Annual Pillar respectively strengthened his favorable Fire and Earth elements; Fire as Resource signifies reputation and backing, while Earth as Friend and Rob Wealth signifies teamwork and practical action. The convergence of auspicious stars in his chart, such as the Heavenly Nobleman and Taiji Nobleman, gave him the perfect timing and environment to achieve great things in the field of technological innovation.
1777 Luck Pillar Ding Si Annual Pillar Ding You Direct Resource Luck Pillar Regulating element appears Si-You half metal frame Academy symbolic star Age 34
Burning Away the Old Theory to Ignite a New Fire
Antoine-Laurent Lavoisier published General Considerations on the Nature of Acids, formally proposing the oxygen theory of combustion. Through rigorous experiments, he overturned the phlogiston theory that had dominated chemistry for a century, marking the great beginning of the Chemical Revolution.
BaZi Analysis This year fell within the Ding Si Luck Pillar (Direct Resource), with the annual Ding You (Direct Resource revealed in the stem). Both the Luck Pillar and Annual Pillar Heavenly Stems were Ding Fire Direct Resource. The Resource element governs thought, academics, and reputation, serving as a key signal for theoretical construction and publication. The annual Earthly Branch You Metal (Hurting Officer) formed a Si-You half metal frame with the Luck Pillar's Earthly Branch Si Fire (Indirect Resource). Metal, as the Eating God and Hurting Officer, represents talent, technical skill, and disruptive thinking, while the Fire Resource endowed him with a logical framework and authority. The combination of the two perfectly depicts using rigorous experiments (Metal) and theory (Fire) to overturn the old doctrine (phlogiston). At the same time, the Academy and Taiji Nobleman symbolic stars in the Luck Pillar indicated profound thought and forceful writing, highly favorable for writing books and establishing a theory, achieving an epoch-making scientific revolution.
1778 Luck Pillar Ding Si Annual Pillar Wu Xu Ding Si Luck Pillar Direct Resource revealed in the stem Wu Xu Annual Pillar Favorable elements Fire and Earth Heavenly Officer symbolic star Age 35
Defining the Element: Rightly Naming the Source of Combustion
At the peak of his scientific exploration, he officially named the gas that supports combustion "oxygen," meaning "acid-forming element," and confirmed it as an independent chemical element. This pioneering work laid the cornerstone for modern chemistry.
BaZi Analysis This year was the final year of the Ding Si Luck Pillar (Direct Resource). The Luck Pillar's Heavenly Stem Ding Fire Direct Resource combined with the Hour Pillar's Heavenly Stem Ren Water Indirect Wealth, activating the Heavenly Nobleman and Academy symbolic stars in the Hour Pillar, meaning his academic thought and literary expression reached their peak and could receive authoritative recognition. The annual Wu Xu featured the Heavenly Stem Wu Earth Friend, a favorable element, combining with the Year Pillar's Gui Water Direct Wealth, while the Earthly Branch Xu Earth also provided a strong root, greatly enhancing the energy of the Wu Earth Day Master and making him resolute and supremely confident. The annual appearance of the Heavenly Officer and Taiji Nobleman symbolic stars represented receiving supreme honor and epiphanies in official or academic spheres. The Luck Pillar and Annual Pillar jointly activated powerful Fire (Resource) and Earth (Friend) energy, precisely when his favorable elements arrived. Resource governs reputation and theoretical breakthroughs, while the Friend governs independent responsibility and pioneering, perfectly matching his historical achievement of defining a core concept through independent research and etching his name in history.
1783 Luck Pillar Bing Chen Annual Pillar Gui Mao Indirect Resource Luck Pillar Shen-Zi-Chen three-harmony water frame Wu-Gui combines into Fire Taiji and Literature symbolic stars Age 40
Breaking the Old to Reveal the True Nature of Water
Through rigorous experiments, he confirmed that water is a compound of hydrogen and oxygen rather than a single traditional element. He published a groundbreaking paper, sparking a revolutionary wave in the scientific community.
BaZi Analysis This year, the native was in the Bing Chen Indirect Resource Luck Pillar. The Luck Pillar's Earthly Branch Chen formed a powerful Shen-Zi-Chen three-harmony water frame with the Shen and Zi branches of the Month, Day, and Hour Pillars, pushing the already flourishing Water (Wealth) energy in his chart to its absolute peak. The annual Gui Mao featured the Heavenly Stem Wu-Gui combining into Fire, creating an imagery of "Water and Fire in Harmony" that stimulated transformation and breakthroughs. The annual Earthly Branch Mao Wood Direct Officer formed a Zi-Mao punishment with the Day and Hour Branches (Zi Water), activating the Spouse Palace and Children Palace—a strong signal for starting a family. Although the punishment brought some turbulence (such as secular scrutiny over age differences), the convergence of the Heavenly Kitchen symbolic star from the Luck Pillar, and the Heavenly Nobleman and Literature symbolic stars from the Annual Pillar foretold that his wife was intelligent and virtuous, capable of providing immense assistance in documentation and technical skills—the very image of a "wise wife and noble children."