Don't Know Your Day Master Yet?
Generate your complete BaZi chart on Key of Elements — free, instant, with classical interpretation of your Day Master and the pillars around it.
Generate My Chart →BaZi — also called the Four Pillars — is a 2,000-year-old Chinese tradition of chart reading. From the exact year, month, day, and hour you were born, it maps your natural temperament, strengths, and the rhythm of your life. Not fortune-telling. A mirror for knowing yourself.
This complete guide walks you through the three foundations — Yin-Yang, the Five Elements, and the Four Pillars — then introduces your Day Master, the core of your chart, and how it can help you move through life with more clarity.
Before Five Elements, before stems and branches, there is Yin and Yang — the two complementary and inseparable forces whose interplay produces everything that exists. No Yin, no Yang: each only shows itself against the other. Understanding this duality is the first key to reading any BaZi chart.
Water, Fire, Wood, Metal, Earth — five elemental frequencies that correspond to colors, seasons, organs, emotions, and personality types. They flow between heaven and earth, and through your birth chart. Every Heavenly Stem and Earthly Branch belongs to one of these five.
Generating cycle — each element nourishes the next:
Controlling cycle — each element restrains another:
When Yin-Yang pairs with the Five Elements, the result is the ten Heavenly Stems (甲乙丙丁戊己庚辛壬癸) — the ten Day Masters you see in the cards above.
"BaZi" (八字) literally means "eight characters." Your birth year, month, day, and hour each produce one Heavenly Stem + one Earthly Branch — four pillars of two characters each, eight in total.
The Day Master — the Heavenly Stem of your birth day — represents you. Everything else in the reading is interpreted through its relationship to the Day Master. The ten cards above are the ten possible Day Masters.
* Example chart: April 9, 2026, Sì hour. The Day Master is 己 Yin Earth — the sixth of the ten Day Masters below.
Now that you've met Yin-Yang, the Five Elements, and the Four Pillars, choose your Day Master — the Heavenly Stem of the day you were born. Each is a complete classical guide drawn from Ditian Sui.
Don't know yours yet? Generate your free chart first.
Once you've met your Day Master, these guides take you into the next layers.
Generate your complete BaZi chart on Key of Elements — free, instant, with classical interpretation of your Day Master and the pillars around it.
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