I think it is better to be over five years old, because learning can only be called real learning after children have a certain understanding ability. If you are four years old, professional teachers need to interview your child's thinking maturity.

Under normal circumstances, it is more appropriate for kindergarten children to start learning Zheng. At this time, the child's knuckles have developed to a certain stage, and the strength of playing the strings can basically be reflected, and the skills of learning the piano can be planned under the control of the teacher. Guzheng, on the other hand, is very cultured, and can be learned by children of several years old to middle-aged and elderly people in their sixties and seventies, and by fans of all ages.