1, naturally. Dingjiazhuang Shinan Senior High School is a four-star middle school founded by Nanjing Education Bureau, which belongs to public schools, while Hongshan No.13 Middle School is a private full-time boarding complete middle school, which is managed by Nanjing Education Bureau.

2. Teachers. The middle school attached to Dingjiazhuang South Normal University was established in 1989, with teachers with more than ten years' teaching experience, while Hongshan No.13 Middle School was established in 200 1, and its teachers are not as good as Dingjiazhuang South Normal University.