You can't. According to official website, in 2023, the Education Bureau of Baotou City will prohibit any public junior high school or private middle school from enrolling previous graduates, and candidates who failed in the reference senior high school entrance examination will not be allowed to apply for repeat students, and no school will be allowed to enroll. The senior high school entrance examination is a joint examination for junior high school graduates to take part in ordinary middle schools or secondary specialized schools.