Without solfeggio course, the most common problem for children who directly enter musical instrument learning is that with the increase of music difficulty, their interest in learning music will become lower and lower, resulting in many children being forced to give up after just one year of learning. The main reason for this situation is often the limitation of music score and solfeggio. Learning solfeggio for about half a year before learning musical instruments can make children "hear clearly and see clearly", significantly improve their perception of music, interest in learning and flexibility, and their musical instrument learning will also have better persistence and enthusiasm. For preschool children aged 4-6, precious childhood gives them the most abundant energy, pure mind, and endless potential and creativity. We say that musical hearing training before the age of 7 is much more important and effective than training for more than ten years after growing up. Indeed, children's hearing ability has been fully developed at the age of 7, and learning before that can give full play to children's musical ability and talent. Seize the golden age of 4-6 years old and give your child a precious childhood gift that will last for a lifetime.