Why do you say that Duke Zhou can interpret dreams?

Duke Zhou, surnamed Ji Mingdan, is the fourth son of Zhou Wenwang and the younger brother of Zhou Wuwang. It is said that he is a rare assistant minister, a famous sage, and is honored as the Duke of Zhou. Zhou Wenwang interpreted the gossip into sixty-four hexagrams and wrote the Book of Changes, which was good at predicting others. Duke Zhou inherited his father's business at this point and was good at interpreting dreams.