Research on rural-urban land conversion system in China 并列题名：Research on rural-urban land conversion system in China Research on rural social security legal system in China On rural land circulation system in China Research on reconstructing rural financial system in China research on international exchange and cooperation of education in China Research on the construction of rural governance system in China Research on the council university banking loan system in China 并列题名：Research on reconstructing rural financial system in China Research on credit rationing and reform in rural financial system in China