What does Weishui mean when he says Qishan fell asleep in the morning?

Jiang, Shang, Ziya and flying bear. According to "King Wu Chops Peace", Xibo Houye dreamed that a tiger with wings came to your highness, which means that when Jiang Taigong met him, Zhou Wenwang dreamed of Jiang Taigong, and Xibo Houye dreamed that a tiger with wings came to your highness. The Duke of Zhou said that "tigers have wings, flying bear", and as a result, a saint, Jiang Shang, was born. At that time, Jiang Shang was fishing by the Weihe River.