For example, the world is a children's city designed for children aged 3-12 and managed by children and adolescents. The city has the same form and landscape as the real city, with social rules and culture set by simulation. Here, children are exposed to “society”, understand “society”, and become the master of “society”. For example, the purpose of the world is to “educate and entertain”, to create alternative parent-child experiences and to optimize the traditional parent-child communication model. Through the children's career simulation, let the children learn the knowledge in the game, and at the same time generate more resonance with the parents, and draw the distance between the child and the parents.