Different institutions use different materials, such as the Zhongba Yilei Demonstration Base of the Central Ballet. The content of the textbook is "Ballet Grading Examination Textbook of the Central Ballet Company (Level 3)", which was jointly published by Feng Ying and the Central Ballet Company, 202 1. This textbook is the result of the ballet popularization education and innovative exploration of the troupe for many years, and is composed of Yang Xiong, Wang, Wang Quanxing, Wang, Zhang Jian, Wang Shuxiang, Wang Jian, Chen Li 'e and Lin Hong. The textbook * * * is divided into nine levels, and each level adapts ancient and modern classic ballet works into small dance fragments suitable for children according to their age, physical and mental characteristics and training duration, so as to tailor a systematic ballet learning system with China characteristics for children.