How many kinds of fortune-telling methods are there?

Fortune telling is an act of speculating people's fate, which belongs to the category of metaphysics. The science of fortune telling is called Yi Xue, also called numerology. Its theoretical core is yin and yang, five elements, eight diagrams and the Book of Changes, and its theoretical system is complex and profound. Fortune-telling in a narrow sense is the prediction of birth (four pillars and eight characters), while fortune-telling in a broad sense includes reading numbers, palm reading, eight diagrams, six hexagrams, Taoism, six pillars prediction and so on. Ancient divination, black and blue, and divination are all fortune-telling.

Finger-fan fortune-telling is a kind of behavior that uses personal information, such as the lines of face and hands, the eight characters of birth, the strokes of names, etc., to predict or judge good or bad luck and seek guidance.