According to my simple understanding, fortune-telling is basically a skill of empirical language.
The father died before the mother, which is a very classic case. The other thing is whether you have a mole on your left leg. If there are black spots, then you will believe it. Then I can make some words based on your clothes and make you believe it.
The so-called I Ching fortune-telling is all about bad luck.
By the way, if you are older, they will ask you if you had a serious illness in your early years. But what is a serious illness? For me, a serious cold is considered a serious illness, but for some people, it may be a serious illness that requires surgery. Both ends can be explained.