Required space programs are planned for each cube. And these cubes create the entirety of the space and architectural form. Once a cell is filled by either programs or building masses, other cell will be emptied. The design approach is this repetitive process of filling and emptying the cells. Main courtyard space penetrates the building vertically and horizontally. The space is harmonized with surrounding cubes, which has its own personality and unique function, and makes a relationship between inside and outside.