Is the fortune teller calculated according to the Book of Changes?

In fact, Mr. Yijing is very easy to distinguish. It doesn't mean that he tells you exactly what will happen tomorrow (it can be calculated, but modern people don't have the ability). A serious gentleman will tell you several possibilities, such as calculating that you will have a fortune on this business trip, but it doesn't mean that money will fall from the sky, but tells you that such an opportunity is just around the corner, and whether you can seize it depends on your own grasp. Of course, there are also people who study the Book of Changes and take up a lot of calculations, but I don't believe such people will set up stalls on the street to give you a casual calculation.