Architecture, Building and Structure Design Quad House Bar by Nolan Chao With advanced and underlying design conception and construction approach, the building, once a dangerous one, was reconstructed to recall the attractive moment of the ancient quadrangle in the center of Beijing. Considering the difficulty of rebuilding and how to balance the style of the bar with privacy and respond to the whole context, the modern function was accentuated to blend into the historic surroundings to deal with the three paradoxes —— new and old, low-key and high-end, market and comfort.