Buy in JD.COM. Zhongke Mathematical Thinking, produced by Henan Publishing House, has been launched in JD.COM Mall and can be purchased in JD.COM Mall. The thinking training of Chinese mathematics is a mathematics textbook edited by Xu Kai and published by Hohai University Press, and it is also the designated textbook selected by the authoritative domestic cups such as the World Youth Olympic Mathematics Competition. Editor-in-chief Xu Kai, editor-in-chief of China Mathematics, has long been engaged in the research and exchange of Olympic mathematics competitions, and has systematic research and practical experience.