Why are immortals so accurate in fortune telling?

I'm also confused about this question. I didn't believe it before. A few years ago, in order to erect a monument to my great-grandfather, my grandfather died 10 years ago. My father didn't know the location of my great-grandfather, so the family discussed it and went to a place dozens of kilometers away to ask the fairy. When she got there, Xianpo spoke amazingly, and even called out her father's nickname and my name. I really found it when I came back to look for it. It's a ghost This fairy's house is dozens of kilometers away from mine, and it is not in the same direction. Our family has never been here, so it was decided that day. Xianpo didn't have a chance to investigate. Xianpo's tone and movements are exactly the same as my grandfather's. I believe in science, but it doesn't seem very scientific.

Please accept the answer and support me.