Deep in the secret realm of Kunlun, Zhou Yi practiced under "Tian Yanzi" for sixteen years. Not only did he acquire all Tian Yanzi had learned throughout his life, but he also awakened the bloodline of the ancient Zhou Yi in the forbidden area of the secret realm. He could see the secrets of heaven, detect misfortunes and blessings, understand medicine, and learn martial arts. One day, Tian Yanzi handed him a bronze tortoise shell engraved with runes, leaving only the twelve-character motto "Go down the mountain, experience the world of mortals, mend the way of heaven, and find cause and effect." When Zhou Yi entered the world for the first time, he was dressed in a coarse preacher's robe that had been washed white and carried an old cloth bag on his back. However, he repeatedly encountered obstacles in the bustling city and amazed everyone. He helped a down-and-out wealthy family resolve a disaster, changed the fate of a dying man against the will of heaven, defeated the powerful from outside in a martial arts competition, and while exploring the secrets of turtle shells, he was involved in a shocking conspiracy that destroyed the Zhou Yi family three hundred years ago. From an unnoticed boy in the mountains to a strange person who stirred up the world, Zhou Yi used his extraordinary ability to walk in the world of mortals, searching for cause and effect, and finally uncovered the truth about the gap in the way of heaven and fulfilled his own "destiny to go down the mountain."
