Jiayu comes from the lower world and has mysterious genes. She has never gone to school, but she has excellent grades in the First Level Academy. Someone is helping her. There is a fire in the lower realm. Jiayu steals holy water and goes to the lower realm to put out the fire and meets Chi Shengyang. The two spend some quality time in the Nether. Jiayu was punished for stealing holy water. She angrily returned to the lower world to practice with the nine-tailed fox Shangguanya. Shangguanya understands Jiayu's talent, and wants to use Jiayu to make heaven pay attention to the lower realm and qualify him to be promoted to an immortal. Chi Shengyang was listed as the prince of the Nine Heavens. The heaven was divided into two factions. One faction supported the idea that the lower realms could be admitted to the immortal position based on their ability, while the other faction strongly opposed it. Chi Shengyang is fighting the opposition. Jiayu learned that once she passed the exam to become an immortal, Chi Shengyang would have to step down from the throne of the crown prince. Jiayu gave up the idea of becoming an immortal, so she fell out with the nine-tailed fox. During the Yuan Dynasty, Jiayu's father came to Jiayu and said something to Jiayu. Only then did Jiayu understand her life experience. It turns out that her family has the most noble bloodline in Jiuchongtian, and she is a well-deserved descendant of the royal family. Ke Jiayu didn't want this secret to be published. Chi Shengyang's jade seal was lost, Chi Shengyang was expelled from the palace, and was reborn in a poor farmhouse. When Chi Shengyang was five years old, he came to Jiayu to beg for food. Jiayu recognized him, and Jiayu gave him delicious food. Chi Shengyang grew up slowly and returned to Jiuchongtian, but saw his twin brother Chi Shenghui sitting on the throne, and his father and mother were imprisoned. Chi Shengyang got the key to the cell, but he couldn't open it. It turned out that he had to drop the blood of his most beloved woman into the keyhole to open the lock. Chi Shengyang couldn't bear to let Jiayu die, but Jiayu still committed suicide. Then a miracle happened