a case study of rural households in Hebei province 农村民生问题研究：基于河北省农户调查分析：a case study of rural households in Hebei province a case study of private enterprises in Zhejiang province a case study of Wuxiang, Hebei province a case study of Hubei province a case study of Guangdong province a case study of northwest province a case study of the central subregion of Henan Province a case study of Jiangxi province a case study of Shandong province