It is a children's activity center that integrates functions such as amusement, sports, puzzle and fitness. Mainly for children like to drill, climb, slip, roll, sway, swing, jump, shake and other natural design. Naughty Fort can cultivate children's independent personality, exercise, brain and brain puzzle, and has the characteristics of randomness, no motivation, interaction and safety. Simple management and operation, no power amusement equipment, easy maintenance.