Lady Yue raised Yue Fei on money that she saved up from doing sewing for the family who had saved them from the river and taken them into their home. When Yue Fei was 13, he entered a cave and found a monstrous snake sleeping by a stream. He picked up a rock and threw it at the beast. The snake lunged at him in anger, but Yue Fei dodged to one side and pulled on its tail with his supernatural strength. The snake instantly disappeared in a puff of smoke, leaving only a marvelous golden spear named the "Magic Spear of the Flowing Spring" (). He later found a military teacher who taught him how to wield the spear efficiently.