The Shenzhen International Finished Housing Exhibition concluded on 23 August. Its Challenge the Impossible project brought together Shenzhen Furniture Association's housing institute, Japanese housing designer Sadao Tsuchiya, GSIN, Shenzhen General Institute of Architectural Design and Research and industry partners to build a fully prefabricated, move-in-ready steel home on an empty site within 24 hours.
At 10:30 on 20 August, Shenzhen Deputy Secretary-General Li Zhuowen launched the challenge. At noon on 22 August, institute head Guan Yongkang announced success. Actual on-site construction took 18 hours and 15 minutes, almost six hours ahead of the target.
Preparation took nine months, 4.5 trial assemblies, two main-structure revisions and repeated connection improvements. Early trials exposed the lack of integration among the building, interiors and component systems. The lesson was to develop a complete building system rather than treat prefabrication as only an efficient construction method.
From the two-storey exhibition home to 25-storey residential and public buildings, integration should follow consistent modular design, component modules, standardized spaces and assembly-based construction. Standard unit types can be combined into four-bay modules, individual blocks and multiple blocks, while steel's long spans and column-free interiors enable adaptable layouts, even on constrained sites.
GSIN's booth showcased the residential system jointly developed with Tsuchiya, the general institute's design studio and the housing institute. Designed by Tsuchiya, it expressed steel and lightweight walls through physical connections, models and technical displays. Chairman Zhang Feng presented the system's introduction and applications at the industry forum.
The event strengthened international awareness and supply-chain coordination from structure to interiors. GSIN thanks Sadao Tsuchiya, Shenzhen General Institute of Architectural Design and Research, Shenzhen Furniture Association's housing institute and all challenge partners. The original article also presents Shenzhen World Exhibition & Convention Center, which GSIN helped build.
