What is the relationship between Zhouyi, Duke Zhou and Yijing?

Zhouyi is a reference book to describe the changing laws of things. It has a history of more than 3,000 years. The original author Zhou Wenwang's surname is Ji Mingchang. Our ancestors thought that everything in the world had yin and yang, which was acquired. The five elements of gold, water, wood, fire and earth determine the future of things. Zhou is a historical period from the end of Shang Dynasty to the beginning of Zhou Dynasty in China. Easy and changeable. Zhouyi prediction: it is to predict and estimate things in advance according to the changing law of the five elements of ancestors. Duke Zhou, the famous Dan, is the son of Zhou Wenwang and the brother of King Wu. He was a politician and thinker in the early Western Zhou Dynasty. Because Zhou took Wang Tai as his fief, he was called Duke of Zhou. Duke Zhou was kind, filial and versatile since childhood. When King Wen was around, he was different from those children, relying on filial piety. When King Wu ascended the throne, he received loyal support. Once, King Wu was ill, and his ministers were worried, so he asked the first king for help. "The Duke of Zhou is good at doing his own thing, setting up three altars, and the Duke of Zhou stands in the north, telling the King of Thailand, the King of Qi and the King of Wen on behalf of Bi Binggui." I would like to replace the king of Wu with myself and say, "I am skilled and versatile, and I can serve ghosts and gods." When King Wu died and became king when he was young, Duke Zhou resolutely shouldered the heavy responsibility of "managing the country" and taught him to become king. Duke Zhou helped the country and the country with his life. Confucius pursued the career of Duke Zhou all his life. Duke Zhou's political thought of "respecting morality and protecting people" is the direct source of Confucian political thought. An important concept in Confucianism, "Li", also originated from Duke Zhou. Since the Eastern Han Dynasty, people have often called it "Zhou and Kong". Tang Hanyu listed Duke Zhou as one of the key figures of Confucian orthodoxy. Duke Zhou is our ancient cultural heritage and the crystallization of the wisdom of working people. Although it is difficult to be elegant, it is widely circulated among the people. Everyone must dream. Dreams and people are the same as souls and people. They come with them, go with them and accompany people all their lives. As long as the thinking ability of the human brain is still there, dreams will always exist. Dreams have no hierarchy, no age, no hierarchy, no gender, no Chinese or foreign, but the contents of dreams are different. Dreams, like human figures, are both ordinary and mysterious, illusory and real. If the dream is an illusion, the characters and events in the dream are vivid after waking up; If the dream is a true expression, it's hard to find someone exactly like the person in the dream after waking up. Sometimes I think every day that night is a dream; Sometimes what you see in your dreams comes to you every day. At this point, the mystery of dreams has long been known by our ancestors, that is, dream culture has emerged. Dream culture is an indispensable part of China ancient culture. Although it is difficult to be elegant, it is widely circulated among the people. Duke of Zhou is a book about dreams. In the history of art and mathematics, it is difficult to find the art of dream interpretation. It is listed here because dream culture is very popular among the people, and good or bad luck can be predicted from dreams. There are always different opinions about the word "Zhou" in Zhouyi. For example, some people think that Zhou means "everything is ready in Zhou Pu"; Some people think that Zhouyi refers to the Zhou Dynasty. The Zhou Dynasty was accepted by ordinary people, and many people thought that the word "Zhou" in Zhouyi meant time. During the Western Han Dynasty, Confucianism regarded Zhouyi, Shi, Shu, Li, Yue and Chunqiu as classics, which were collectively called the Six Classics. So the Book of Changes is also called the Book of Changes.