Boundary, nucleus and close greenbelt form the system of the outer environment of highrise settlement , each part of the system have their own function , they compose a basic cell together.

• 边界、核心和近宅环境空间组成了高层住居的外环境系统，各个部分都承担着相应的功能属性，构成了一个相对完整的基本单元。