Operation of children's playgrounds; Children's playgrounds services; Children's playgrounds chains; Provision of play facilities for children; Operation of children's play school; Children's art educational research; Conducting of children field study for educational purposes; Instruction of children field study for educational purposes; Provision of children experience center for educational purposes; Provision of children field study information for educational purposes; Providing kids' theme park services; Kids theme park chains; Kids theme parks franchises; Operation of children's physical program; Operation of swimming baths; Operation of soccer classroom; Operation of indoor stadium; Operation of sports center; Physical education; Physical training services