There is kangaroo mathematics in Xuzhou. The reason why there is a kangaroo math competition in Xuzhou is that this competition has been carried out in Xuzhou for many years and the effect is good. Kangaroo Mathematics Competition is an international mathematics challenge held in more than 87 countries around the world. Suitable for all levels of participation, focusing on fun. It aims to stimulate children's interest and confidence in learning mathematics through topics close to life. 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.