On December 21, 2012, the "end of the world" arrived right on schedule.
An [Abnormal Regional Gravity] event caused by an unknown gravitational wave reduced Cangtai City to ruins. The survivors and their relatives from other cities were safely resettled by the state in "Special Administrative City 1▪2," Tianhai City.
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Born with unusual eyes, the young Su Mingzheng was bullied by those around him from childhood. To him, the only person in the world who was there for him was his adoptive older sister, Xiao Xi. His only happiness was going home to spend time with her.
This continued until 2010, when he was eleven and in fifth grade. Just as he was about to lose consciousness, he caught a fleeting glimpse of a girl in a middle school uniform. Her sudden appearance saved him. Afterward, Xiao Xi kept the boy at home for a long time.
In 2011, the family moved away from Cangtai, where they had lived for years, because of his "father's" job transfer.
In early 2012, his father was transferred back to Cangtai for work, while the rest of the family remained in Tianhai. That September, Xiao Xi disappeared.
According to Zhu Yinxian, his sister's friend and classmate, who often came between the boy and his sister during his leave of absence, Xiao Xi had gone to Cangtai City to see her father.
After the gravity disaster in Cangtai City, Xiao Xi and her "father" were listed among the "Post-Disaster Missing Persons."
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In 2015, a string of brain-death and suicide cases involving survivors of the Cangtai City gravity disaster, known as [OLD DES], occurred in Tianhai City.
