E6·Bentu One use concrete as the primary material for a place of contemporary cultural exchange. Set in a renovated 11m×14m rectangular underground room in a former Beijing offset printing factory, the space is enclosed by 3-meter fair-faced concrete slabs, with the floor and modular furniture set in the same color. The concrete-made bar and pendant lamps hanging above divide the service area from the activity area. Modular concrete stands with small wheels installed and multi-functional concrete cubes are convenient to rearrange for different events, creating an interactive relationship with people in this limited but unconstrained underground space.