What is the ending of Dancing in the Sky?

Later I learned that since Sue is a humble snow devil, she can only defend her love. So she came to the castle of the dragon emperor and Shi Xingyu and told a big lie, saying that Jiu Linger could be resurrected with the five-element array. In fact, she wanted to take this opportunity to kill the Dragon Emperor, so that her beloved Li Xuan would not become a demon. But everything fell into the conspiracy of Prince Datang.

Li Xuan's misunderstanding of Alec Su made him choose to forget after he got the treasure. Sue completely forgot what she had done. She should treat him well and make him fall in love with her again. She will take good care of him and let him grow up in love.

In the five-element array, Su danced the dance of celestial burial, but at the moment when the Nine Shines turned to dust, when Shi Xingyu's soul was the most fragile, Su didn't really kill the Dragon Emperor, and the Dragon Emperor chose to live and die in order to save her. Sue survived and became the shadow of the 90' s. (end of the play)

Extended data:

Introduction-

Under the background of the prosperous Tang Dynasty, human beings and demon families coexisted at that time. However, the appearance of Li Xuan, a hybrid of human and demon race, has broken the temporarily calm world, and a big conspiracy is breeding, and people hiding in the dark are ready to move. During this period, there are also emotional entanglements between the demon spy Sue and the fantasy lover Long Weier.

At that time, Li Xuan, who was already a hero to save mankind, was in a dilemma. Terran was defeated, his mother died, the demon clan was defeated, and he became a traitor to Terran. In the end, Li Xuan defeated Shi Xingyu, destroyed Chang 'an large array and released the demon clan imprisoned by Terran. A war was solved, and two shemale families gained temporary peace, but the price was heavy. It falls to Li Xuan to protect the two shemale families and rebuild Chang 'an.