Is Xibo Hou Jichang the Duke of Zhou who interprets dreams?

I don't think so. When we say Duke Zhou, we mean Zhou Gongdan. Zhou Gongdan is the younger brother of Zhou Wuwang Ji Fa and the son of Xibe Hou Jichang. Historically, Ji Chang has always been called the king of literature. It was Xibo Hou Jichang who created gossip, "Wang Wen was arrested and beaten in Zhouyi", which means Xibo Hou Jichang, and it was Duke Zhou who created the "ceremony".