It is said that secrets cannot be revealed. Is there really a secret?

This principle comes from the Book of Changes. As the saying goes, people who engage in geomantic omen, physiognomy, Buddhism and Taoism will master some secrets when studying astronomical phenomena, but those who often master them will not disclose the contents, because they will lose their lives and be retaliated by God after revealing the secrets. People who practice often suffer more retribution and disasters before they can ascend to heaven.