Why does the fortune teller know my past, everything I met, and know exactly what year he knew it? Why?

1, he knows you, but you don't know him, 2, he has secretly investigated you, 3, your affairs have been leaked by messy people or things, what forms have been filled in online, and even mobile companies may disclose your information (very atmospheric), 4, he is right, in short, don't believe him, it's been 2 1 century.