Orange has been widely used in many commercial scenes for its visual impact and positive energy promotion. In this practice, architects try to further stimulate the energy function of orange in the dark underground space and create a brand new field experience for the dreary underground commercial street.

The project is located at the core of the southern entrance of ritan underground commercial street, with two sides of the street, east and south, which makes the space itself have the potential to create a clear volume relationship.

There is a secondary steel structure floor set up by the original owner in the site. As a restriction, the storey height of the first and second floors cannot be adjusted.  In order to maximize the future business area for the new owner, a new steel structure frame was added on the basis of the original two-story structure as a structural reserve for subsequent area expansion, while not destroying the original open space of the first floor.