1.Design Techniques: clean · simple ·limit · extend · structure · quality. 2. Body block extension, wall hole. 3. Hanging, creating local interactions between spaces. 4.Material extension, light introduction. 5. Visual interaction, active indoor space to create natural artistic conception. 6. Inspire children's thinking divergent ability, creativity, artistic imagination, shaping personality charm. 7.The use of arched doors in space, inverted arched doors, mirror reflections, vertical plate arrays, Square bases, general spheres, etc..