practice and experience of Ningxia the practice and experience from Ningxia practice and experience in Shanghai The practice and experience in China the practice and experience of Jiangsu Province 生态移民与精准扶贫：宁夏的实践与经验：practice and experience of Ningxia practice and principles 自发移民与社会治理：宁夏的实践和经验：the practice and experience from Ningxia practice and consideration of Guangzhou practice and exploration