Like many intertwining, following and overlapping telescopes, all the arms of the Micro Hutong complex gather around the central courtyard, which is the real core of the project. The word Hutong means the tight streets or the historic paths of the city of Beijing, small alleys made of siheyuan lines, arranged like living units around a courtyard.

Many new Hutong houses have been randomly built in the peripheral areas, while the historic ones were modified. The siheyuans that originally hosted a single family, were later split into living units, to which were later added other rooms.

This space optimization is well visible in the project developed by ZAO/standardarchitecture, that study solutions to create ultra-small scale social housing featuring great space optimization.

The core of the project is the courtyard which creates a direct relationship between the domestic and the urban spaces, acting as a transition zone between the inside and the outside, a semi-public area lived by both owners of the minimal house, and the neighbors. Not to mention the fact that this space layout improves ventilation and natural light inside the houses, whose arms open toward the center with wide glass  doors surrounded by wooden windows. Moreover, three openable skylight windows were arranged on the roof, in order all the rooms are provided with natural ventilation. The main, on-site built block of the project  is based on painted concrete with china, surrounds the courtyard with two trees overlooking the five environments of the house.

The comfort is ensured by central air conditioning system and radiant floor in each room to provide a comfortable interior situation against the severely cold winter weather in Beijing.