Why didn't anyone tell me this is a parallel world?

After her death, Xia Liuying returned to the summer when she was 15 years old and had just finished her high school entrance examination. Recalling the short and mediocre life of my previous life. I watched the high school in my previous life send me an invitation to enroll again. Xia Liuying accepted it gladly, determined to live a different life this time. But, why didn't anyone tell her...this is a parallel world! What are superpowers? ! What is Starman? ! Why is there still a national live broadcast? ! Isn't she in high school? ? ? ...