Research on the construction of the legal mechanism of energy cooperation in the "Belt and Road" Research on the construction of the legal system of administrative contract Research on the construction of regulatory mechanism of fintech innovation Research on the ethnic regions' participation in the construction of the belt and road 并列题名：Research on the construction of the legal system of administrative contract research on the construction of county-level converged media center in midwestern China Research on the construction mechanism of the united front discourse system research on the construction of animation performance system research on the construction of Shanghai global asset management center research on the innovation of the parallel system of position and rank