The mystery of fortune telling

As you said, there are three possibilities in this situation.

First, this person is an expert in facial expressions, and can see all your situations and past life experiences through your facial expressions.

The second possibility is that this person is an expert in divination. For example, this person is proficient in Taoism, the number of plum blossoms is easy to calculate, or any skill of the six benevolent people can know their general life experience and situation by counting their fingers. If these skills reach the highest level, you will know your last name when you meet without even asking.

The third possibility is that this person is a charlatan. He may have a lot of cliches, meet different people and say different things. Then, according to the law of large numbers, I will tell these words to many different people every day, and I will definitely meet someone who fits the situation. For example, he told 100 people that if one or two of them met the requirements, he could cheat them out of their money.