Summer Vacation Is Over, I Start to Look Back Infinitely

At the end of the summer vacation, Zheng Jing received a strange text message. "Don't go to school." He didn't take it to heart. But when he opened his eyes again, he was back on the first day of summer vacation. July 1st. At first, he thought it was just a dream. Until the same message appears again. Until the mysterious girl in a blue and white dress appeared again. Until the sky was torn open by black cracks, countless monsters descended, and the entire world was destroyed before his eyes. After his death, he returned to July 1st again. Once, twice, three times... Zheng Jing began to try to change the future. Not going to school. Leave Beijing. Avoid what is bound to happen. But he gradually discovered that no matter how he escaped, the end point called "December 12th" was always there. And what's even weirder is—— The girl named Lei Xiaokun seemed to have known him for a long time. "Zheng Jing, you have asked me many times."