The society was tightly managed by the state system through workplace affiliation. Housing during this period is mainly designed all together with the work-unit more as a infrastructure for the workplace and featured by the technical regulations design codes includes: Standard of Basic Terms in Urban Planning, Standards for Urban Land Classification and Planning of Construction Lands, Code of Urban Residential Area Planning and Design, Code of Urban Road and Traffic Planning and Design, Code for Comprehensive Planning of Urban Infrastructures, etc. Planning idea is basically following the concept of “Neighborhood Unit”  and the 90% investments for housing projects are from the state.(Junhua 2001)(Perry 1998) 
The Economic reforms in1978 have changed China from foundations to various aspects. After 1978, the urbanization rate of China increased by 12.5 percent from 1978 to 1998 as compared to only 5.5 percent from 1952 to 1978\cite{Ho_2004}. Resources under the command system have been dispersed to the hands outside the work-unit system. Urban private businesses have emerged and created jobs that are not formally affiliated to a work-unit.\cite{Wu_2002} The change in urban space began after lased with state work-units to develop comprehensive ‘planned’ residential districts in the 1980s. (Wu 2002)The work-unit system start to milt down, integration between workplace and residence has been transformed by large residential development projects.
In the 1990s, the introduction of the central-local fiscal contract effectively started the decentralization of state power\cite{Tsang_1998}\cite{Zhang_1999}. Local government has gained more discretion to arrange investment and to promote local growth: the enactment of the City Planning Act in 1989 gives municipalities the right to prepare urban plans, to issue land-use and building permits (China State Council,1990), Transfer of State-owned Urban Land Use Rights.] This is always considered to be the real catalyst for the real estate market, and the driving force for the massive large scale urban development\cite{He_2005}\cite{Shin_2009}. Urban development in the Chinese cities has been driven to a high speed road to booming since then. (Fig.2)