Sanlidun campus. Sanlidun Campus is a newly-built campus of Chengzhong Primary School Education Group. It has first-class teaching facilities, including multimedia classrooms, laboratories, libraries and gymnasiums. It is also equipped with advanced teaching equipment and network facilities. It also has a team of high-quality teachers, including many famous education experts and excellent teachers. Nantong Zhongsanlidun Campus is a campus of Nantong No.1 Middle School, located in Zhongsanlidun Street, Chongchuan District, Nantong City. Founded in 2003, the campus covers an area of about 50 mu and is one of the larger middle schools in Nantong.