Theory and practice of rural land system reform in China's urbanization process 并列题名：Theory and practice of rural land system reform in China's urbanization process Theories and practice on construction and system reform of ecological civilization Theory and practice of rural planning based on urban and rural institutional reform Theory and practice of administration system reform in China theory and practice of German foreign relations theory and practice of urban sub-center construction 并列题名：Theories and practice on construction and system reform of ecological civilization theory and practice of urban social pension service in China Study on the rural land system reform in urban and rural integration