These eight words are "Ren Xu, Ren Yin, Gui You and Yi Mao".

Eight-character fortune telling needs to provide:

Gender, exact date of birth, indicating the solar or lunar calendar;

When the time is 1, 3, 5, 7 and 9 o'clock, it should also be stated whether it is before or after;

Birthplace and current residence can be specific to the county or city;