What does the fortune teller mean by patting you on the shoulder?

What the hell is a ghost slapping on the shoulder?

A common way for ghosts to pat you on the shoulder is to feel someone calling you from behind or patting you on the shoulder when you walk at night. You can't turn back, because it is said that everyone has a lamp on his left and right shoulders. If you turn around, the lights on your shoulders will go out, turn around from left to left, turn around from right to right, and you will lose the protection of the gods. Ghosts will harm you, and you will also see ghosts.