该项目位于常州一处高层公寓住宅，使用面积约为25m²，是委托者的第二居所，闲暇时自己或约朋友来这里放松休憩。原始空间是一个大的开间，只有东侧一扇大落地窗户，用于采光和通风。在这个极小单元模块的内部创造出宁静的氛围以及实现外部自然的居住体验是我们的美好愿景。房屋的进深约 8.3m，面宽为3m，层高仅有3.4m，层高存在很大的局限性，因此提出 "山梯峡谷 "的概念，我们想在城市中创造出一种室内山居的生活方式，在仅有的25m²长方体盒子里，室内地面根据等级和功能属性被划分出5个不同地势高度，每个地势高度对应相适应的功能。每次回家就是一场登山之旅。当所有功能落位后，在中间形成一道狭长的山谷，山谷的尽头是开阔明亮的。我们将所有的功能整合在了一个大空间里，与其说我们设计了一个25平米的家，还不如说是设计了一个从地板、坐台、桌子、柜体、床、再到天花板，一个巨大的室内家具。最终实现一个具备居住功能以外还能成为一个开放、流动的社交空间，回应屋主作为第二居所的诉求。根据功能属性来创造出地形，以没有边界为目标，从而孕育出一种开放感，这种开放感似乎比 25 平方米的实际面积要大得多。这是一个基于屋主的生活方式和狭小场地的可能性而建造的大房间。25平米的极限住宅，是我们对极小住宅空间设计的一次实验和探索。
The project is located in a high-rise flat house in Changzhou, with a usable area of about 25m², it is a second home for the client, where she comes to relax and rest by herself or with her friends in her spare time. The original space is a large open room with only one large floor-to-ceiling window on the east side for light and ventilation. It was our vision to create a peaceful atmosphere inside this very small modular unit and to realise a natural living experience outside. The depth of the house is about 8.3m, the width of the face is 3m and the floor height is only 3.4m. There is a great limitation of the floor height, so we proposed the concept of ‘Mountain Staircase Canyon’, we want to create an indoor mountain living lifestyle in the city. In the rectangular box of only 25m², the indoor floor has been divided into 5 different terrain heights based on the level and functional attributes, and each of them corresponds to the corresponding function. Every time you go home is a hiking journey. When all the functions fall into place, a narrow valley is formed in the middle, and the end of the valley is open and bright. The natural wood texture and large opening windows bring air and sunlight into the room, creating good ventilation and lighting, and creating a comfortable indoor physical environment. We integrated all the functions in one large space. Instead of designing a 25m² home, we designed a huge interior furniture from the floor, the sitting platform, the table, the cabinets, the bed, and then the ceiling. The final result is a home that functions as an open, fluid social space in addition to a living space, responding to the homeowner's desire to live as a second home. Creating a topography based on functional attributes and aiming for no boundaries breeds a sense of openness that seems much larger than the actual area of 25m². This is a large room based on the homeowner's lifestyle and the possibilities of a narrow site. 25m² of extreme housing is an experiment and exploration of our design for very small residential spaces.