The policy transition from gated community to block system,which is related to intergenerational justice and sustainable urban development,has aroused many controversies concerning public space.Through questionnaires and online-opinion survey,this paper finds that the public generally has a misunderstanding on China's new "community opening up policy." In detail,there is a remarkable group difference in the public's evaluation on this policy transformation.Those who have already bought houses mostly disapprove of the policy,while other groups have various considerations based on their own interest.The public's attitudes always have been influenced by different policy options and the ambiguity in policy implementation.Since the adjustment of urban space involves a wide range of interests,the relationship between individual interest and public interest and that between the government and civilians have become complicated when some property owners use the immature "common interest" as an excuse to protect their interests.The situation becomes even more complex when the power and voice is unbalanced.Thus,rational communication should be promoted to guarantee the procedural justice of policies,and systematic reform should also be promoted to guarantee the substantive fairness of policies.
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