Research on the theoretical system of the accessory in China Research on the legal system of easement in China Research on the theoretical construction of petty misdemeanor in China Research on the regulatory system of data trading in China 并列题名:Research on the theoretical construction of petty misdemeanor in China Research on the fiscal system of the preschool education in China Research on the guiding system of criminal cases in China Research on the theory and practice of succession law in China research on the procuratorial system of the Nanking National Government Research on the system of border tourism in China