It is said that once a person is over 30 years old, the constellation will change. Is it true?/You don't say. Tell me why. ...

It is a rising sign, because before the age of 30, our personality tends to our sun sign, and after the age of 30, we tend to our rising sign. For example, your sun sign is Virgo, rising in Sagittarius. Before the age of 30, your character will be conservative, but after the age of 30, influenced by the rising sign, your character is a bit like Sagittarius. This is the explanation.