BaZi (八字, "eight characters") is a 3,000-year-old Chinese system of self-understanding — the Chinese cousin of a Western birth chart.

From your birth date and time it builds your Four Pillars — the year, month, day and hour you were born, each tied to one of the five elements (Wood, Fire, Earth, Metal, Water).

The pillar for your birth day is your Day Master — the element that best represents you, and the anchor the whole reading is built around.