The folk saying is: No matter men or women (especially boys and girls), it is difficult to talk about the illness and get married late. Every time they get engaged or get married, they will get sick. It is necessary to find out whether this person is a "true boy". According to the eight-character formula, the Yin-Yang master of fortune-telling divination judges that those who have the following information are "true boys": "Yinzi is expensive in spring and autumn, but it is not yet mature in winter and summer, and the golden wooden horse is in harmony, and the fire and water meet chickens and dogs, and the fate of the earth meets the time." The interpretation of the formula is: Yinzi in the Spring and Autumn is expensive-one life was born in spring or autumn (calculated by monthly order), and the Japanese branch or the time branch sees Yinzi; Winter and summer are not yet mature-life is born in winter or summer (calculated by monthly order), and the daily or hourly support sees the maturity, failure or maturity; The golden wooden horse and the-year column are gold or wood, and the daily branch or the hour branch is at noon or the base; When fire and water meet chickens and dogs, the column sounds like water or fire for one year, and the daily or hourly branches are unitary or ambiguous; It has been a year since the birth of the earth, and it is the death of the earth. Anyone who can occupy one word of the above formula is a "true boy".