A child's first name can include the parents' surname, but the surname can only follow the father or mother. I think this will do. It doesn't matter whether the child chooses or not. However, for children under the age of 18, their names should be agreed by themselves or their parents. Parents agree, but the cognitive person disagrees, and parents infringe on their children's right to name; For children who have not formed cognitive awareness, only one parent agrees and the other does not. If the consenting party decides forcibly or arbitrarily, it will infringe on the custody of the other party.