Xia Zhigang 
Simple Courses for Children in Audition and Ear Training 

These courses, as basic teaching materials for children, feature systematicness, normalization and practicability, and are composed of audition in stave and simplified notation, rhythm practice, ear training, score copy and listening in four levels – enlightenment, preliminary, intermediate and advance. The book contains 32 units, each of which is provided with a specific theme.