What is a hidden constellation?

The so-called hidden constellation means that my birthday date is not necessarily within the date range of this constellation, but the character of this constellation is very consistent with mine, so we say that this constellation is the invisible constellation of this person, because everyone's personality is not determined by his birthday.

Relatively speaking, a person's birthday is within the date range of a certain constellation, so we say that this constellation is the dominant constellation of this person; For example, if the birthday is on June 25th of 10, then this person's dominant constellation is Scorpio.