Research on the economic development of the Yangtze River Delta under the Belt and Road initiative Research on high-quality development of Chinas cultural trade under the Belt and Road Initiative Study of the economic cooperation mechanisms under the Belt and Road initiative Research on the development strategy of ocean-rail transportation under the Belt and Road initiative Research on the economic development path of Anhui province under the background of Yangtze River Delta integration Study on sustainable development of international energy cooperation under the Belt and Road initiative Research on trade relations between China and central and eastern Europe under the Belt and Road Initiative Research on economic development of the main featured industries in Southern Xinjiang Research on third-party market cooperation under the Belt and Road initiative Research on the legal system of international trade in intellectual property under "The Belt and Road" initiative