Can ancient gossip only be used for fortune telling?

In ancient times, gossip was divided into innate gossip and acquired gossip, which was not only used for fortune telling (inferring birth). Let's put it this way: The Eight Diagrams of the Book of Changes are almost the source of China's metaphysics, including geomantic omen, eight characters, Daoism, Wei Zi's fortune-telling, physiognomy, palm print, six hexagrams, plum blossom and so on, all of which originated from the Eight Diagrams of the Book of Changes. Like a big tree, those are branches.