Special terms for horoscopes. In the ancient fortune-telling popular in my country, the year, month, day and hour when a person is born is divided into four pillars, namely the year pillar, the month pillar, the day pillar, and the hour pillar. The day pillar is the life pillar, the year pillar is the ancestor, the month pillar is the parents, and the year pillar is the ancestor. The hour pillar is Zixi. Each column has one day stem and one earthly branch, which are matched by the cycle of ten heavenly stems and twelve earthly branches. The ten heavenly stems are Jiayi wood, Bingding Dinghuo, Wujitu, Gengxinjin, Renguishui. According to the four-pillar and eight-character calculation method in horoscopes, people whose day stem is Ren or Gui belong to the water zodiac.
The Water Year is two consecutive years. If the Heavenly Stem is Ren, the next year will be the Water Year, and the next year will be the Wood Year. There are two Water Years every 10 years in the Heavenly Stem cycle. For example, 1982 and 1983 were both water zodiac signs, and this year is the year of Geng Yin and the year of the Golden Tiger!