The Duke of Zhou in The Duke of Zhou is the son, the fourth son, and the younger brother of the outstanding politician King. He helped Zhou Wuwang to crusade against Shang and Zhou Dynasties and invented rites and music. Because his fiefs and fiefs were in Zhou, he was called Duke of Zhou. This title was called Gong in ancient times, and it was also a kind of honorific title. For example, during the modern Republic of China. Two famous "Duke Zhou" and "Duke Jiang" believe that everyone knows who they are. Male is both a respectful name and a title.
If you still don't understand this, then the famous sentence in Cao Cao's "Short Songs": The Duke of Zhou vomited, and the world returned to the heart. You should have heard this story, that is, the story of Duke Ji Dan of Zhou.
Duke Zhou is kind-hearted and charitable, fearing to lose the sages of the world. He washed his hair once, but it was not clean. He grabbed his uncombed hair many times. When eating, I spit out the food several times and couldn't wait to receive these wise men.