What is Chinese Astrology?
Chinese astrology is a traditional system of cosmological divination rooted in the Chinese lunisolar calendar, Taoist philosophy, and correlative cosmology. Based on traditional Chinese astronomy and the Chinese calendar, it uses the principles of yin and yang, wuxing (five phases), the ten Heavenly Stems, the twelve Earthly Branches, and time calculation after year, month, day, and shichen (double hour). Unlike Western astrology, which assigns signs by month based on constellations, Chinese astrology assigns animal signs by year and tracks destiny through elaborate systems like the Four Pillars of Destiny (Bazi) and Zi Wei Dou Shu.
A person’s fate can be determined by the position of the major planets at the person’s birth along with the positions of the Sun, Moon, comets, the person’s time of birth, and zodiac sign. The system integrates animal archetypes, elemental cycles, and celestial observation into a comprehensive framework for understanding human affairs in relation to cosmic patterns.
Origins & Lineage
Chinese astrology was elaborated during the Zhou dynasty (1046–256 BC) and flourished during the Han dynasty (2nd century BC to 2nd century AD). Coordination of human activity with the sun, moon, and stars can be traced back to the Neolithic cultures of the fifth millennium BCE, evidenced by pottery depicting solar imagery and carved shells showing stars and supernovae.
By the late Zhou dynasty (1046–256 BCE), tianwen, “sky-pattern reading” or astrological prognostication, took as its frame of reference the twenty-eight lunar mansions or equatorial hour-angle segments into which the sky was by then divided. During the Han period, familiar elements of traditional Chinese culture—yin-yang philosophy, the theory of the five elements (Wuxing), concepts of heaven and earth, and Taoist, Buddhist, and Confucian morality—were integrated to formalize the philosophical principles of Chinese medicine, divination, and astrology.
The system of the twelve-year cycle of animal signs was built from observations of the orbit of Jupiter (the Year Star; Suìxīng). Following the orbit of Jupiter around the Sun, Chinese astronomers divided the celestial circle into 12 sections, and rounded it to 12 years (from 11.86). Sources place its beginning in the Warring States period (475–221 BCE), the Qin dynasty (221–207 BCE), or the Han dynasty (206 BCE–220 CE). In any event, it had been firmly established by the latter half of the Han dynasty.
The Heavenly Stems and Earthly Branches (Gan Zhi) system, foundational to Chinese astrological calculation, originated during the Shang dynasty (c. 1600–1046 BCE), as evidenced by inscriptions on oracle bones, and were formalized by the Han dynasty for calendrical and divinatory purposes.
How It’s Practiced
Chinese astrology is practiced through several interconnected methods:
Twelve Animal Signs (Sheng Xiao): The 12 Chinese Zodiac signs in order are Rat, Ox, Tiger, Rabbit, Dragon, Snake, Horse, Goat, Monkey, Rooster, Dog, Pig. Each year in a repeating twelve-year cycle is associated with one animal, believed to influence the personality and fortune of those born in that year. Chinese people associate each animal sign with certain characteristics. It’s believed that people born in a given year have the personality of that year’s animal.
Four Pillars of Destiny (Bazi): The Four Pillars of Destiny, also known as BaZi (‘eight characters’), is a Chinese astrological system used to analyse an individual’s destiny based on the person’s date and time of birth. The system derives its name from its core structure: four “pillars”, each consisting of a pair of characters—one Heavenly Stem and one Earthly Branch—corresponding to the year, month, day, and hour of birth. Originating during the Tang Dynasty (618–907 CE), where scholar Li Xuzhong formalized the use of birth data for destiny calculations, it gained widespread popularity in the Song Dynasty (960–1279 CE).
Five Elements (Wu Xing): The Chinese word xing literally means something like ‘changing states of being’, ‘permutations’ or ‘metamorphoses of being’. Wood, Fire, Earth, Metal, and Water interact through producing and controlling cycles to shape interpretations of health, compatibility, and timing.
Zi Wei Dou Shu (Purple Star Astrology): A system of computing one’s predestined fate based on birthday, birth season, and birth hour is still used regularly in modern-day Chinese astrology to divine one’s fortune.
Practitioners consult these systems for marriage compatibility, business launch dates, naming children, understanding career paths, and medical diagnosis in Traditional Chinese Medicine.
Chinese Astrology Today
In China, even today, it is consulted not only out of curiosity but as a strategic tool. It influences the date of a wedding to ensure harmony between the couple, the launch of a business to ensure its prosperity, and even plays a role in traditional Chinese medicine diagnoses.
The system remains widely practised in mainland China, Taiwan, Hong Kong, Singapore, Malaysia, and among Chinese diaspora communities. Regional variants are practised in Korea (where it is known as Saju) and Japan (where it is known as Shichū Suimei).
Seekers encounter Chinese astrology through:
- Professional consultations with Bazi or Zi Wei Dou Shu practitioners
- Annual zodiac predictions during Chinese New Year
- Online calculators generating Four Pillars charts
- Integration with feng shui and Traditional Chinese Medicine consultations
- Cultural festivals celebrating the zodiac year transition
In the 1990s, demographer Daniel Goodkind found that the 1976 and 1988 Years of the Dragon had seen surging fertility rates in China and Chinese-speaking countries—a result of people re-engaging with the widespread belief that a child born during a Year of the Dragon will have a lucky life.
Common Misconceptions
It’s not just the year animal: It is a common misconception that the animals assigned by year are the only signs. There are also animal signs assigned by month (called “inner animals”), by day (called “true animals”), and hours (called “secret animals”).
Your zodiac year is unlucky, not lucky: It’s seen as a hurdle you have jump over. Traditionally, people wear red during their zodiac year for protection.
It’s not personality typing: The chart is not a horoscope. It is not a personality profile. It is a structural map of the elemental forces that were in play at the moment you were born.
Western vs. Chinese astrology are fundamentally different: In the West, we have our eyes fixed on the Sun. In China, they observe the dance of the Moon and Jupiter. This is the fundamental difference between our two visions of the sky. Chinese astrology does not use Western constellations or planetary positions in the same way.
Cats are not in the Chinese zodiac: Most historians agree that the Cat is not included, as cats had not yet been introduced to China from India with the arrival of Buddhism. Vietnam uses the Cat instead of Rabbit.
How to Begin
For those new to Chinese astrology:
- Calculate your Four Pillars chart using a reputable Bazi calculator (ensure it adjusts for solar time and Chinese New Year dates)
- Learn your animal sign and basic personality correspondences, but understand this is only the entry point
- Study foundational concepts: yin-yang theory, the five elements (Wu Xing), Heavenly Stems (Tian Gan), and Earthly Branches (Di Zhi)
- Seek a qualified practitioner for a professional reading—interpretation requires years of study and understanding of complex elemental interactions
- Explore classic texts: While most texts are in Chinese, English translations and commentaries on correlative cosmology and the I Ching provide philosophical context
- Consider formal training through lineage-based schools in Taiwan, Hong Kong, or Singapore if pursuing serious study
Approach Chinese astrology as a rich, millennia-old system of cosmic correlation rather than a simplified personality quiz. Its depth rewards sustained study and cultural humility.