Interior Space and Exhibition Design Xu Zhai Residential Building by Baodong Wang Xu Zhai is a residential interior design for a multi-level private house. The layout follows the traditional courtyard form and is arranged over several levels to create a sense of depth. After the renovation, large floor-to-ceiling glass brings the greenery in front of the villa and the lake surface into the interior. The first floor opens toward the water view, while the balcony offers a dry landscape. Each floor includes an open void, so people upstairs and downstairs can see and speak to each other. Wood, stone, paint and glass are used.