I wonder what Wei Zi Doudou is.

Wei Zi's fortune-telling is a fortune-telling method in ancient China, and it is also considered as a kind of astrology. Based on astronomical observation, combined with the zodiac and the five elements, it uses various mathematical skills and astrological terms to calculate personal fortune and personality characteristics according to information such as birth date, birth time and birthplace. This algorithm was widely used in ancient China, because people thought it could reveal personal future paths and opportunities.