The surname Ji, Ming Dan, also known as Shu Dan, is the ancestor of the Duke of Zhou. Politicians, militarists, thinkers and educators in the Western Zhou Dynasty were honored as "Yuan saints" and were pioneers of Confucianism. Zhou Wenwang's fourth son, Zhou Wuwang's half brother. Because the fief is in Zhou, it is called Duke Zhou. After the death of King Wu, his son became a young king. He was the regent of this country. After the death of King Wu, putting down the rebellion of the "Three Supervisors", promoting feudalism, establishing the East Capital and the system of rites and music, and returning the government to become a king played a key role in consolidating and developing the rule of the Zhou Dynasty and had a far-reaching impact on the development of China's history.
Duke Zhou enjoys a lofty position in Confucian culture. Confucius said, "I no longer dream of Duke Zhou" is a metaphor for the loss of etiquette culture in the Zhou Dynasty.
Duke Zhou is a frequent figure in Confucius' dreams. In China, where Confucianism has dominated the culture for a long time, Duke Zhou is inevitably directly associated with dreams. Dreams are often called "dreams of the Duke of Zhou" or "dreaming of the Duke of Zhou".