How did Xiong Xing come from in fairy tales?

Zeus came to earth and was pregnant with a woman. Hera was very unhappy. A woman turned her mother into a bear after giving birth. Her son has grown up and doesn't know it yet. After hunting, he saw his mother. He just raised his bow and arrow to kill his mother, and Zeus knew it. In order to prevent the mother and son from any accident, Zeus elevated them to heaven and gave them two glorious positions among the stars. This is Ursa Major and Ursa Minor, shining in the northern sky.