This paper takes the practice of block system reform in Chenjiahu Community as an example to analyze the contradictions,difficulties and problems in transition from closed communities to open blocks,and in transition of the grassroots governance,and the solutions for su...MORE This paper takes the practice of block system reform in Chenjiahu Community as an example to analyze the contradictions,difficulties and problems in transition from closed communities to open blocks,and in transition of the grassroots governance,and the solutions for such...