Co-Owner of Creation

When Xu Yang woke up, he found that his cultivation had improved by one level. The technique actually works on its own, don't you think it's so exaggerated? Forget it, since I can practice while sleeping, I might as well sleep again. When I woke up, my cultivation level dropped a level. Xu Yang was so scared that he didn't dare to sleep. When the empress learned Xu Yang's identity, she was so frightened that she peed on the spot. Xu Yang was a little confused. What was going on? Who am I?