The so-called Tiangong map is to locate this person's birthday with heavenly stems and earthly branches as the latitude and longitude. The ten-day work is: A, B, C, D, H, G, N, D, D, and the ground branch is: Zi Chou Mao Yinchen has applied for a visit at noon. Then the ancients calculated the origin of time, and the first year from the origin was the year when the first number in the heavenly stem and the first number in the earthly branch were combined to locate-Jiazi year. Similarly, the first day is Jiazi Day, and the first hour is Jiazi time. Because the month may have been discovered by the ancients when studying the movement of celestial bodies and timely festivals, the month of the lunar calendar is always later than the Gregorian calendar, so it begins not with Jiazi month, but with silver moon. This is my personal guess, there is no real evidence. Regardless of the positioning law of the month, from the general trend, the date and year of a person's birth are made up of ten heavenly stems and twelve earthly branches. But the transition period between decimal and decimal is 60 times. That is to say, Jiazi will not appear for two years until 60 years later. Therefore, the ancients called a 60-year-old man "Hua Jia" or "Jia Jia". Similarly, any time has its corresponding branch, which is symmetrical with the zodiac. So the year of the tiger, the year of the tiger, the year of the tiger, the year of the tiger, or the year of the rooster, the year of the rooster, the year of the rooster, the year of the rooster and so on appeared.
When we talk about the tiger, the tiger corresponds to the yin in the twelve branches. And Shuang Hu's life, as the name implies, is eight characters, four pillars and four branches with two yin. From the eight-character numerology, the most important thing for a person is often the sun and the moon. So many times, double Hu refers to the appearance of cloudy moon and cloudy day.