Isn't fortune telling good at counting? Then why not let him solve the case or figure out who his relatives are for the long-lost people?

Fortune-telling is mostly based on the Book of Changes, but the original meaning of the Book of Changes is that things have their own laws of development, and there are causes and consequences. It is more about the prevention and prediction of what will happen. Knowing that it is the wrong risk must be avoided in advance. This is reasoning. It's not a prophecy, it's all prepared in advance according to the law. Therefore, it is more macroscopic reasoning, which is a conventional method. The explanation on the first page of the Book of Changes is not prediction, but aims to explain the changing law of things in the development of positive and negative relative factors.