Eight characters, also known as four pillars, began in the Tang Dynasty. At first, it took rosary as the main body and life as its life, supplemented by Yinna method. In the Tang Dynasty, Li changed it to year-based and used four pillars: year, month, day and hour. In the Five Dynasties, Xu Ziping changed to Japanese occupation as my (Japanese master), focusing on the restraint of the five elements between the four pillars and the encounter between punishment and punishment, and carried it forward. Today's eight-character divination is based on Ziping method, so the eight-character numerology is also called Ziping method or Ziping eight-character study.
Fortune-telling is commonly known among the people, and the academic title is prediction. The academic research of fortune-telling is called Yi Xue, also called astrology, also called Fan Fortune-telling.
According to legend, Guiguzi began in the Warring States and Li people in the Tang Dynasty. In the past, many areas specialized in their business, commonly known as astrologers or astrologers. They either sit and wait for the calculator to arrive, or take the Hu Qin to the countryside to "calculate".
After the child is born, his parents must make a calculation within seven days.