There is a god in the Three Kingdoms named Guan Ju, who knows astronomy above and geography below. What divination did he do for Cao Cao?

In the novel Romance of the Three Kingdoms, Guan Ju appeared in the sixty-ninth edition of Oracle Inscriptions, Guan Ju knew the opportunity to seek the five deaths of Han thieves, and predicted human numerology through astronomy and Zhouyi. Called to divination by Cao Cao, he predicted Liu Bei's attack, Xia's death, Lu Su's death and Xuchang's fire.