During the Three Kingdoms period, who were the prophets, secular experts and mathematicians?

Jia Xu: His wisdom ranks first among the three countries. He is one of the few advisers in Cao camp who can survive. Every time I don't persuade Cao Cao, his predictions come true. Later, because he was familiar with Cao Cao's character, he rarely gave Cao Cao advice. But it ended well in the end. Nothing in my life has been revealed.

Zhou Yu: Zhou Yu in history could not be angry with Zhuge Liang, but he was poisoned by The Romance of the Three Kingdoms. Zhou Yu was able to lead 30,000 Sun and Liu Dajun to defeat hundreds of thousands of Cao Cao troops, which showed his strategy.

Zuo Ci: It's so mysterious. The official history doesn't explain this person now, so unofficial history doesn't have to speculate. But if this person has no ability, it is impossible to be so praised by unofficial history.

Zhuge Liang: An excellent politician has invented many useful things in his life.