From the perspective of children's physical and mental development, I think that children before the age of 5 are not suitable to directly start learning music technology, that is, learning various musical instruments. The reason why I say this is because children of different ages should receive different education. If parents let their children start learning music technology when they are 3 years old, there is a high chance that they will not become the next Lang Lang. Instead, they lose most of their interest in music learning.