Why do fortune tellers know what's in my house?

Why do fortune tellers know what's in my house? A friend once told Bian Xiao that fortune tellers are very effective, because their eyes are not good, so their hearing is good. I can clearly hear what is happening outside, so naturally I know everything.

Although it is a scientific society now, many people don't want to believe in superstition, but there is no denying that the geomantic metaphysics left by our ancestors does have some truth. However, many people come out to cheat and corrupt the atmosphere. In fact, most fortune tellers are very psychological. They will capture your behavior, all things predicted in advance are made by asking questions, and then pretend to draw a path in your hand.

For example, they sometimes ask, "How much does it cost for you and your family to have a meal in the street?" . When you answer a number, they can probably know how many people are in your family through per capita consumption. So you just think he's really nice and believe what he says.