Testing. In Xuzhou City, Jiangsu Province, the knowledge of comprehensive education and special mathematics courses, including the mathematics content of junior high school and senior high school, depends on the preparation of the school. Xuzhou, referred to as "Xu" for short, was called Pengcheng in ancient times. It is a prefecture-level city and sub-central city under the jurisdiction of Jiangsu Province. It is a national historical and cultural city approved by the State Council, a national comprehensive transportation hub and a central city of Huaihai Economic Zone.