You can understand this, but it's not what you know.
First of all, there are more than one million kinds of eight characters. In this calculation, there are 13 hours instead of 12 hours. Besides, men and women with the same eight characters have different lives. This article alone can refute your argument that every two hours in 60 years is a kind of life.
Let me give you an example. The same eight characters are different between men and women. From the perspective of six relatives and ten gods, the official means the same as the boss in terms of male life and female life, but in terms of male life, the official also represents the meaning of "son", and female life cannot be said like this. Similarly, for women's lives, officials, in detail, represent the "husband" and "object" in women's lives, not men's lives.
Similarly, the "partial wealth" of the ten gods who share the same points between men and women is also regarded as the "father". But for men's life, "positive wealth" represents "wife" and "object", but not for women's life. The example I gave is the interpretation of the same character with different genders.