In all cities, there is a contradiction between the cost of land for housing with infrastructure and what large sections of the labour force required by city enter-prises can spend on housing.

• 在所有的城市里，住房及基础设施用地的花费，和城市建设企业所需的大部分劳动力之间存在着矛盾，而这一矛盾会花费供给住房的时间。