What kind of story is "King Wen detained Zhouyi"?

During the Yin Dynasty, Zhou tribes located in the upper reaches of the Yellow River and the Loess Plateau developed. Zhou people respected Hou Ji as their ancestor, attached importance to farming, and worked hard. Yin is dissolute and tyrannical, and his subjects complain and resist constantly. Ji Chang was originally the leader of the Zhou tribe, named "Xibo". Just because he was a German corporal, his reputation was growing day by day, and Zhou Wang was suspicious, he announced that Jichang had visited Beijing, detained him, imprisoned him in Yangjiu prison and deprived him of his freedom of movement.

But the tyrant did not expect that people's thoughts, will and wisdom could not be detained. Ji Chang has been in prison for seven years. In this lonely and long time, he studied the "gossip" created by ancestors' wisdom and legends for Fu. After a long period of painstaking deduction and deduction, it developed into a more profound and subtle sixty-four hexagrams, which was called "Zhouyi" by later generations. Ji Chang's son Ji Fa-Zhou Wuwang overthrew the rule of the Yin Dynasty, and Ji Chang was honored as the king of literature. Since then, the Book of Changes has become a Confucian classic, which has been respected and interpreted for more than 2,000 years and is regarded as a very valuable treasure in the history of human thought development.