Ziwei Doushu is one of the ancient Chinese fortune telling methods, which uses the birth year, month, day, and hour of the lunar calendar to arrange a person's destiny chart, and then peek at good or bad luck; The form of the destiny chart is divided into twelve palace walls, with the main stem and branch as the longitude and latitude, and the star constellations arranged in a row. It lists the stars of the central sky, the Beidou, the Nandou, and the Shensha among them; The method of arranging the chart does not require consulting the almanac, which is different from Western astrology. Instead, the position of the Purple Micro Star is first calculated based on the number of the five elements of the zodiac chart, and the positions of the other 13 stars, including the Central, Southern, and Northern Dippers, are then arranged based on the Purple Micro Star. There are a total of 14 main stars, including the Purple Micro Star, which is also known as the "Purple Micro Dou Shu" because it is led by the Purple Micro Star.
Compared to the Eight Characters and Four Pillars, Ziwei Doushu has an earlier origin and originates from the Book of Changes, so it is also known as the two major schools of traditional Chinese numerology; Moreover, the Ziwei Doushu divination technique includes the five elements of astronomy, geography, feng shui, and modern significance that emphasizes social environment and interpersonal relationships. It stands out in the mysterious predictive culture of China, ranking first among the "Five Great Divine Arts" and is known as the "First Divine Art of China".