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Xu Jianxia, a cleaner, accidentally solved a world mathematical problem and was recommended by a teacher to enter a provincial key high school to take the college entrance examination. After entering the school, Xu Jianxia discovered that she was a classmate with her half-sister, Xu Nanqiao. Xu Jianxia targeted and made life difficult for Xu Nanqiao, attempting to force her to drop out. During the mock exam, Xu Jianxia proved her abilities and was retained by the head teacher. Unwilling to accep
