Research on the legal system of international trade in intellectual property under "the belt and road" initiative Research on the system of intercity cultural exchange and cooperation under the belt and road initiative Research on the legal system of controlling the risk of intellectual property pledge financing Research on the development strategy of ocean-rail transportation under the belt and road initiative Research on the legal system of international trade in lawyers' services Law and dispute resolution of international trade investment and construction under the Belt & Road initiative Research on the economic development of the Yangtze River Delta under the Belt and Road initiative Research on China's foreign cultural trade under the Belt and Road initiative Research on high-quality development of China's cultural trade under the Belt and Road Initiative Research on trade relations between China and central and eastern Europe under the Belt and Road initiative