I heard my father say that my name was given to me by an old man with a white beard in a dream before I was born, and then he disappeared.

My biological father passed away. My mother told me that my name came from before she was born. My father had a dream in which an old lady told my father that the child was a boy. , named Dongnan, and then my dad woke up and told my mom that he had this dream, and my parents both studied the theory of "I Ching", so they believed it and named me Dongnan. My dad My surname is Ai, and my current father’s surname is Yin, so my current name is Yin Dongnan. There is no one with the same name so far. My birthday was in February 1998, and I can’t understand it.