Since China began the construction of the “Digital Silk Road”, significant achievements have been made in areas such as digital technology cooperation, digital infrastructure construction, digital service trade, and cross-border e-commerce with the Belt and Road Initiative (BRI) partner countries. Digital service trade has become a new growth point for economic and trade cooperation between China and BRI partner countries. Based on the background of “Silk Road E-commerce” cooperation, this paper takes 57 BRI partner countries from 2005 to 2023 as samples, employs a stochastic frontier gravity model to analyze the efficiency and potential of China′s digital service trade exports to these countries, and divides market types based on the calculated mean efficiency value to further explore the regional heterogeneity of digital service trade. This paper finds that factors such as the respective economic scale of China and these countries and a common language between them are conducive to China′s digital service trade exports, while factors such as population size and geographical distance hinder such exports. Factors such as “Silk Road E-commerce” cooperation, internet penetration rate, government efficiency, economic freedom, and the signing of free trade agreements with China can effectively reduce the impact of trade inefficiency, while foreign direct investment is not a major factor affecting the efficiency of digital service trade exports. Overall, China′s digital service trade exports to BRI partner countries exhibit relatively high efficiency and great potential. Specifically, efficiency is higher in countries such as the United Arab Emirates, Malaysia, and Saudi Arabia, and lower in countries such as Timor-Leste, Nepal, and Laos. In terms of the trend of export potential changes, the Association of Southeast Asian Nations (ASEAN) and West Asia regions will be the two regions with the greatest potential for China′s digital service trade exports, while the growth of the potential for China′s digital service trade exports to Central Asia, Central and Eastern Europe, and other regions is relatively slow. Based on these findings, this paper proposes countermeasures and suggestions such as continuously deepening “Silk Road E-commerce” cooperation, expanding institutional opening up in digital trade, improving government service efficiency, and innovating digital trade cooperation methods, in order to continuously release the digital trade dividends under the international cooperation framework of “Silk Road E-commerce”.

As one of the world′s most concentrated regions of emerging markets, Latin America has now become a key participant in the joint construction of the Belt and Road Initiative (BRI). The BRI also serves as a vital bond in promoting the building of a community with a shared future between China and Latin America and the Caribbean (LAC). This paper conducts an in-depth review and systematic analysis of the overall cognitive characteristics of Argentina′s mainstream think tanks regarding the BRI, and reveals the acceptance level, concerns, and cognitive evolution path of Argentina′s intellectual community towards the BRI, aiming to provide a reliable basis for China to carry out foreign cooperation in the LAC. This paper adopts a case study approach, selecting nine influential Argentina′s mainstream think tanks with strong research capabilities and broad policy impact as the core objects of analysis. It systematically collates 20 research reports concerning the BRI released by these think tanks since 2017 and uses them as the basic analysis samples. By combining text analysis with inductive comparison, this paper explores the true positions and multi-level logics of Argentina′s think tanks in their understanding of the BRI. The findings reveal that the overall cognition of the BRI among Argentina′s mainstream think tanks is characterized by “the coexistence of positive affirmation and rational prudence”. On the one hand, most think tanks hold that the BRI provides tangible development opportunities for the LAC, including those in infrastructure construction and financial support. On the other hand, some studies also reflect concerns regarding issues such as the BRI′s long-term development path, institutional transparency, and the deepening of Argentina′s economic dependence on China. It can be observed that while these mainstream think tanks generally recognize the potential and strategic value of the BRI, they also demonstrate a certain degree of defensive mentality during the acceptance process. Therefore, in the joint construction of BRI in the LAC, China should attach greater importance to building strategic communication mechanisms, enhancing cultural understanding, and guiding public opinion, and proactively respond to the core concerns of local think tanks regarding the sustainability, fairness, and reciprocity of cooperation. By introducing an analytical framework of “cognitive drivers”, this paper systematically uncovers the institutional, political, and cultural logics underlying the stances of Argentina′s think tanks toward the BRI. This not only provides a new analytical path for understanding how non-Western countries perceive China′s initiatives, but also offers a reference for comprehensively grasping the attitudes of social elites in Latin American countries, particularly those in Argentina, toward the BRI.

The construction of the Hainan Free Trade Port (FTP) is a crucial strategic initiative for China to promote higher-level opening-up. A scientific evaluation of its implementation holds significant importance for optimizing policy execution and enhancing regional development quality. Based on the theoretical framework of regional planning implementation evaluation, this paper develops an evaluation system. First, this paper clarifies its role in promoting high-quality development and ensuring the effective implementation of regional plans. Second, based on the global, national, and provincial conditions, it builds a three-level evaluation index system for the Hainan FTP construction from six dimensions:economy, coordination, society, environment, openness, and security. It also proposes a phased evaluation method to measure the completeness of policy implementation, the effectiveness of execution, and potential risks. Third, applying this index system, it evaluates the implementation effects of the Hainan FTP construction. Finally, it provides policy suggestions to effectively improve the quality and efficiency of the evaluation of the Hainan FTP construction. This paper finds that the Hainan FTP construction has yielded phased accomplishments in institutional innovation, economic openness, and social governance. It has initially transformed from a “policy pilot zone” to a “model zone for high-level institutional opening-up”, offering nationwide experience in integrated institutional innovation and reforms for liberalization and facilitation. However, there is still room for improvement in areas including economic diversification, green and low-carbon development, and inclusive growth. In the future, it is essential to fully implement the master plan for the Hainan FTP construction, further improve the institutional coordination mechanism, strengthen support for industrial innovation, optimize the trade structure, and promote green development.

To analyze the dual impact of the historic expansion of the BRICS on the global trade system and China, this paper examines the overall pattern changes after the inclusion of six emerging economies, namely Saudi Arabia, Iran, Egypt, Ethiopia, the United Arab Emirates, and Indonesia. It is found that the expansion has significantly enhanced the influence of the BRICS in global affairs, promoting the evolution of the global trade governance system towards greater balance. Meanwhile, based on the common demand of the new members for reducing reliance on the US dollar, the expansion will substantially accelerate the process of de-dollarization in settlements. For China, the rich energy resources of new members will help diversify China's energy import channels, improve the trade structure network, and continuously expand the overall trade scale. Moreover, BRICS system will enhance the collective voice of the Global South, thereby laying a more solid foundation for China to participate in formulating future global economic and trade rules. However, opportunities coexist with challenges. While the expanded BRICS mechanism enjoys growing potential, it also faces new tests in internal coordination and the external environment. The objective differences among member states in terms of economic development stage, industrial structure, and policy orientation may cause obstade in the advancement of specific projects and macro policy coordination. At the same time, the growing strength of BRICS may trigger vigilance from traditional developed economies, which may create external obstacles for the deepening of cooperation. Therefore, how to strengthen internal integration and respond to external pressure after the expansion will be the key to the continuous development of the BRICS mechanism.

Pilot free trade zone (FTZ) represents a major strategic initiative for China to advance high-standard opening-up, with important missions including optimizing the business environment and enhancing trade facilitation. Currently, China's export trade confronts multiple challenges, making enhancing export resilience a key factor in boosting international competitiveness and stabilizing trade growth. Based on panel data from 280 Chinese cities from 2010 to 2022, this paper employs a multi-period difference-in-differences (DID) model to systematically evaluate the impact of pilot FTZ establishment on export resilience, supplemented by robustness tests and heterogeneity analysis. Furthermore, it examines the moderating effects of the digital economy, market potential, human capital, and tax burden, and analyzes the spatial effects of pilot FTZ on export resilience using a spatial econometric model. This paper also explores how these moderating variables influence the spatial impact of pilot FTZ on the export resilience of neighboring regions. The findings are as follows. (1) Compared to cities without pilot FTZ, those with pilot FTZ experienced a 2.68％ increase in export resilience, indicating that pilot FTZ establishment significantly enhances export resilience. (2) The digital economy, market potential, and human capital positively enhance export resilience, while an increase in corporate tax burden partially weakens the positive impact of pilot FTZ. (3) In terms of spatial effects, pilot FTZ policies significantly enhance local export resilience but exert limited impacts on the export stability of neighboring regions, with the spatial effects of the moderating variables exhibiting significant heterogeneity. Based on these conclusions, this paper proposes policy recommendations, including deepening the development of the digital economy, fully tapping into domestic market potential, strengthening the cultivation of high-quality talents, optimizing tax policies, and enhancing collaboration among pilot FTZ. These measures aim to promote digital trade development, optimize regional economic structures, and enhance policy synergy, thereby providing valuable references for boosting China's export resilience.

In the context of the rapid development of digital service trade, China continues to deepen its cooperation with countries around the world, while Japan is one of China′s major markets. For this reason, it is necessary to assess the potential Sino-Japanese digital trade and identify its influencing factors in order to provide countermeasures and suggestions to promote it. The stochastic frontier gravity model and data between 2013—2022 are used, the 17 major common trade partners of digital service of China and Japan are referenced, and the potential and influencing factors are measured for the Sino-Japanese digital trade in term of total trade and export trade. It is found that China and Japan have great development potential and improvement space in digital service trade, there is greater room for efficiency improvement on China′s digital trade exporting to Japan. The Chinese government can further improve trade efficiency, exploit and release digital trade potential of both sides by improving digital infrastructure construction, strengthening intellectual property protection, enhancing openness, seeking consensus on digital trade, as well as improving government efficiency, etc.

Constructing China′s digital trade rules is the key to China′s participation in global digital trade and the driving force to promote coordinated and orderly global digital trade governance. The development process and current situation of China′s digital trade rules are sorted out, and the RCEP, USMCA and DEPA are compared and analyzed from the perspectives of coverage, commitment level, and rule innovation. The main research conclusions are as follows:China′s improvement of digital trade rules should be aimed at constructing and promoting open and inclusive rules as well as improving and upgrading the domestic regulations and existing rules, and drawing on the absorption of the relevant issues of USMCA and USP rules. On the basis of upholding the value of data sovereignty, China should reduce the cost of expanding overseas markets for Chinese digital enterprises by incorporating the USMCA′s provisions on data flow and non-discriminatory treatment of digital products; It should promote the inclusive development of digital trade through the incorporation of DEPA′s provisions on small and medium-sized enterprise co-operation and digital inclusiveness, so as to contribute to the development of the disadvantaged groups and the cause of poverty alleviation globally; And it should guide the digital transformation of domestic industries through the incorporation of DEPA′s provisions on emerging trends and technologies. At the same time, the modularization agreement and non-binding rules should be used to promote the integration of global digital trade regulation, and make China′s contribution to the governance framework of global digital trade rules.

China′s energy consumption faces some difficulties, such as the rigidity of environmental constraints, the high proportion of fossil energy consumption, and the low efficiency of energy utilization, etc. The relevant research results are reviewed, and the connotation and characteristics of energy consumption security is explained. It is believed that energy consumption security is a specific level of energy consumption of a country and society, that is the positive utility generated reaches a certain level, and the negative utility generated is subject to certain constraints. Its main characteristics are the bottom line of energy consumption security, the wide area of the scope, the constraint of the guarantee, and the long-term nature of the goal. Accordingly, an energy consumption security index system is built of 12 indicators in 3 dimensions: energy supply, economic development and ecological protection, and entropy weight method is used to give weights to the energy consumption security system and the comprehensive score is measured. The research results show that: the overall level of energy consumption security in China from 2004 to 2022 shows a slow trend of improvement, and the proportion of ecological protection, energy supply and economic development are 3 main influencing factors on the overall level of energy consumption security.

In order to fully respond to the call for the revitalization of the old industrial base in Northeast China, we should deeply study the coordination relationship between scientific and technological innovation and industrial structure upgrading, and strengthen the understanding of the role of scientific and technological innovation in promoting industrial upgrading and the relationship between the two. The entropy weight method and the coupling coordination degree model are used to evaluate the comprehensive development level of science and technology innovation and industrial structure upgrading in 14 prefecture-level cities in Liaoning Province from 2014 to 2021, and to explore the coupling and coordinated development level between science and technology innovation and industrial structure upgrading. The Moran index is used to analyze whether there are spatial agglomeration characteristics in the comprehensive development level of the two systems and the coupling coordination degree between the systems. The results show that the development level of scientific and technological innovation in Liaoning Province is low, and the development level of industrial structure upgrading is high but unstable. The coupling coordination level between scientific and technological innovation and industrial structure upgrading is mainly in the stage of antagonism and running-in; there is a certain spatial positive correlation in the upgrading of industrial structure, while there is no spatial agglomeration relationship between scientific and technological innovation and the coupling coordination degree between the two systems.

The algorithmic price discrimination is highly concealed and technical, which has triple threats of damaging consumers′ legitimate rights and interests, curbing technological innovation of enterprises, and destructing market competition order. It is justified and necessary to impose antitrust regulation on algorithm price discrimination. But the antitrust law generated under the traditional business mode is difficult to effectively deal with the alienation risk of algorithms, and there are practical problems of identification limit and regulatory failure. Therefore, the idea of regulation should be transformed, and countermeasures should be proposed from both legislative and enforcement levels. In terms of legislation, it is necessary to broaden the extension of behavior subjects, to improve the evaluation method of damage consequences, and to clarify the applicable standards of justifiable reasons, so as to solve the problem of antitrust identification of algorithmic price discrimination. In terms of enforcement, a dual regulatory system of antitrust law and algorithms should be constructed, the private governance mode of consumer data empowerment should be explored at the same time, so as to regulate algorithmic price discrimination by multiple measures and lead it to the right track.

As transportation services being a key productive service industry, the reduction of trade barriers in transportation services has brought new opportunities for RCEP regional cooperation and development. After simulating the regional economic effects of reducing trade barriers in transportation services using GTAP model, the following results are found:At the industry level, reducing trade barriers in transportation services is beneficial for promoting regional economic development, improving social welfare, and promoting trade cooperation among members; at the sub-industry level, reducing barriers helps to increase the demand for transportation services provided by other members within the region, expand production-added value, and China and Japan are the main trade deficit countries, with other members mainly exhibiting trade surpluses. Further analysis reveals that the competitiveness of China's transportation service industry is relatively weaker, and it exhibits a short-term trend of deficit, with a long-term trend of surplus. If India joins RCEP, it will not only enhance regional economic effects, but also improve its own economic status. Although it will to some extent divert cooperation between China and the other RCEP members, the scale of trade cooperation between China and India will significantly expand. Policy implications are thus dawn, aiming to provide reference for enhancing the international competitiveness of China′s transportation service industry.

Liaoning is the window of opening up in Northeast Asia and the important node in the construction of the “Belt and Road”. Accelerating the new pattern of opening up of “One Body and Two Wings” is an important measure for Liaoning to deepen reform, expand opening up, achieve high-quality development and comprehensive revitalization and all-round revitalization. A “One Body and Two Wings” evaluation system for the effectiveness of opening up is constructed from four dimensions of trade openness, capital openness, technology openness, and social openness. Factor analysis is applied to evaluate the degree of opening up of 31 provinces in China′s mainland in 2021. The results show that the degree of opening up in Liaoning is at a relatively low level in China, with significantly lower scores for foreign trade and investment factor, education and culture factor and tourism factor compared with Guangdong, Shanghai, and Zhejiang, which is the main factor affecting the level of opening up in Liaoning. Countermeasures and suggestions of acceleraing the construction of new pattern of opening up of “One Body and Two Wings” in Liaoning Province are proposed from the perspective of main factors of foreign trade and investment, education and culture, and tourism, as well as the policies such as aligning with high standard international rules to optimize the business environment, strengthening the opening up platform construction of regional cooperation, and improving the international cooperative transportation network, etc.

With the promotion of world economic integration, improving and eliminating the “trade inefficiency” phenomenon and improving the level of trade facilitation have attracted the attention of all countries. Based on the panel data of 30 trading partner countries from 2012 to 2019, a comprehensive evaluation system of trade facilitation level is built, and the expanded gravity model is used to explore the impact of trade facilitation level of trade partner countries on the cross-border e-commerce exports of China. The regression results show that the trade facilitation level of trade partner countries is positively correlated with the cross-border e-commerce exports of China. ICT indicators are the most important indicators that affect cross-border e-commerce exports. The customs environment and financial development level have an important impact, but infrastructure plays a very limited role in cross-border e-commerce exports.

The price index, institutional environment and import tariff data of 10 commodities are selected and matched from 31 province-level regions in mainland China from 1994 to 2018. Based on trade liberalization, the effect of tariff reduction on consumer welfare and the impact of institutional environment on tariff transmission mechanism are studied from both theoretical and empirical aspects. The results show that: tariff reduction can significantly improve consumer welfare, but this incomplete transmission effect is affected by the institutional environment; the optimization of institutional environment can promote the tariff transmission mechanism, especially for general consumer goods; the effect of institutional environment on tariff transmission mechanism is different between coastal areas and inland areas, which is mainly reflected in that the optimization of institutional environment plays a more significant role in promoting tariff transmission in coastal areas.

Actively expanding emerging markets is an important choice under the background of promoting the diversification of the Chinese foreign trade market. It is found that the Chinese export of mechanical and electrical products to most emerging market countries has great potential and room for improvement by measuring the efficiency, potential and influencing factors of export. Based on that, the export layout of the mechanical and electrical products of China should be optimized and the markets of emerging countries should be actively expanded. On the basis of promoting the establishment and construction of FTA with such countries, strengthening communication and coordination between governments, building a diversified, multi-level and multi-channel bilateral or multilateral cooperation platform, and accelerating the promotion of connectivity, taking the construction of soft channels as a new means, Internet and digital technology are focused on promoting trade model innovation.

Agricultural product trade is an important part of international trade. With the development of cross-border e-commerce, the research on the efficiency and potential of cross-border e-commerce trade of agricultural products has become increasingly important. From the perspective of network development level, customs clearance efficiency and logistics efficiency, the principal component analysis method is used to calculate the cross-border e-commerce development index of 33 countries that have close contact with China in agricultural trade from 2010 to 2019; taken the cross-border e-commerce development index as the core variable, the stochastic frontier gravity model is introduced for empirical analysis. The results show that the development of cross-border e-commerce in various countries is extremely unbalanced; the per capita GDP of both trading parties and the level of cross-border e-commerce development of importing countries can promote the cross-border e-commerce export of agricultural products, while the distance between countries can hinder it. The cross-border e-commerce export trade of agricultural products of China with countries in the Middle East, Africa and Europe is inefficient and has great potential value; the trade efficiency of cross-border e-commerce export of agricultural products of China with Japan and the United States is high. Finally, countermeasures and suggestions are put forward in improving infrastructure construction, strengthening professional talent training, and promoting the construction of free trade zones, etc.

Digital trade is playing a more and more important role in international trade. According to the current situation of global digital trade, analyzing the current situation and main problems of the digital trade of China is of great significance to promote the development of the digital trade of China. The current situation of global digital trade is firstly analyzed by using the actual data. The development characteristics of the digital trade of China are explored through comparative analysis. The main problems existing in the digital trade of China are pointed out, and the causes of these problems are expounded. Finally, the strategies suitable for the development of the digital trade in China are given by combining the development of digital trade at home with that at abroad.

In view of consumer risk aversion behavior, a network equilibrium model is constructed for the cross-border e-commerce B2C supply chain. The equilibrium condition of supply chain network is expressed by variational inequality, and the optimal behavior of different decision levels is analyzed, so that the whole product supply chain network is balanced, and a more efficient operation mechanism is given. At the same time, numerical examples are used to analyze the impact of different consumer risk aversion levels on the flow and transaction prices of the whole supply chain network equilibrium, and countermeasures and suggestions are put forward.

After eight years of negotiation, RCEP was officially signed in 2020. The major historical event will have a significant impact on the capital flow within the RCEP. The new economic geography research method is adopted to construct a trade and capital return model covering three economies. The impact of labor costs-one of the causes of the difference of human capital-on capital flows is obtained by analyzing the changes of capital gains of enterprises in each economy after the RCEP is reached. It concludes as follows:Reaching RCEP will reduce the inflow of capital to ASEAN and China in some industries with fierce market competition and low wages but may increase the inflows to developed countries such as Japan, Korea, Australia and New Zealand. As for industries with higher technical threshold and higher wages, the inflow of capital to countries with large-scale market and low wages will be slightly weakened, while the inflow of capital to countries with small-scale market and high wages will be increased. According to it, policy suggestions are proposed on how to better deal with the changes of FDI inflow and to optimize the investment structure.

The six countries of the Greater Mekong Sub-region(GMS)are geographically adjacent and complementary in resources. As early as the 1990s, they had conducted in-depth exchanges and cooperation through multiple economic integration organizations. However, the economic development of GMS countries is not balanced at present. How to improve and increase the effect of economic integration to seek a common way out for economic growth in GMS countries has become an urgent problem to be solved. Based on the Greater Mekong Sub-region Economic Cooperation Mechanism(GMSECP), the Feasible Generalized Least Squares(FGLS)method is used to analyze the economic growth effects and interaction of the six GMS countries joining GMS economic integration and other regional economic integration organizations. As the results show, the coordinated economic integration of GMS significantly promotes the economic growth of member countries; The promotion effect of the six GMS countries joining other regional economic integration organizations on economic growth appears in the third year, and the economic growth effect of GMS economic integration is further strengthened; However, due to the uncertainty of related social issues, electricity production and national health investment in GMS may even restrain the economic growth of the member countries. According to the results, the suggestions for the construction and development are provided for GMSECP from three aspects: adjusting the arrangement of priority of cooperation areas, strengthening the external contact and communication, and preventing the spaghetti bowl effect.

From the perspective of global value chain, the measurement and analysis of digital service trade between China and Japan can avoid the errors caused by repeated trade statistics, and can truly reflect the trade scale and competitiveness of the two countries in the new trade mode of digital service trade. The comparative analysis between China and Japan is made by selecting the data of World Input-Output Database 2016(WIOD 2016)and using the latest value-added decomposition method and value-added related measurement indicators. It is concluded that the growth rate, scale and participation in the global value chain of the digital service trade of China are higher than those of Japan, but the Japanese position in the global value chain is higher than that of China. Policy suggestions are proposed accordingly to improve the system and supervision, build an international statistical accounting system, and improve the industrial international competitiveness, etc.

In recent years, trade relations are closer between China and Japan with Russian Far East Federal District. In order to judge the trade relations of China and Japan with Russian Far East Federal District, basis should be provided in deepening regional economic cooperation in Northeast Asia. Taking 2010—2019 as the investigation period, trade relations of China and Japan with Russian Far East Federal District are analyzed using the related trade calculation index. It shows that the two countries both play an important role in the Russian Far East market, but their competition is gradually increasing. The trade relations are mainly based on the comparative advantage determined by their respective factor endowments, the trade relationship between them is not stable inherently. Therefore, both China and Japan should actively promote third market cooperation in Russian Far East Federal District, which should focus on the industries with highly complementary and strong competitive relationship, such as manufacturing industry, energy industry, agriculture industry, etc. The three countries should strengthen the construction of trade and investment facilitation together.

Singapore is an important emerging industrial economy in Asia, an important member of ASEAN and an important signatory of RCEP. In the context of promoting “Belt and Road” constantly, it is of great practical significance to comprehensively study all around Sino-Singapore trade relations. The trade relationship between China and Singapore is analyzed multi-dimensionally by constructing macro-indicators, and extended trade gravity model is introduced to provide empirical analysis and interpretation from macro- and industrial perspectives. The results indicate that both China and Singapore identify no remarkable sensitive trade industries in their exports, while some industries have reciprocal or unilateral dependence; the scale of Chinese economic outcome has significant impact on Sino-Singapore trade, and there exists an imbalance problem in the structure of trade complementary between China and Singapore. Accordingly, suggestions are proposed that China should strengthen political and economic consultation with Singapore, promote the rationalization of trade structure, seize the opportunity of RCEP to promote bilateral trade demand, so as to better promote the deepening of bilateral trade cooperation between China and Singapore.

The opening of the Sino-European freight train transportation has greatly promoted the development of Sino-EU trade. After the outbreak of COVID-19 Pandemic, Chinese foreign trade has been affected to varying degrees via ocean shipping and air freight transportations. The trade related to Sino-European freight train transportation has been able to achieve the growth through its higher transport efficiency and lower cost advantage in the context of global recession. It has greatly promoted the sustained and rapid growth of the total volume of Sino-European trade, and also promoted the trade exchanges between China and countries and regions along the Road and Belt. Based on the analysis of the economic and trade data of the Sino-European freight train transportation, an in-depth study is made on the issues and causes of Sino-European freight train trade, and suggestions are proposed on how to make better use of the Sino-European freight train transportation to promote Sino-European trade so as to push the Sino-European trade to a new stage.

The uncertainty of Sino-US trade policy and enterprise technological innovation behavior are analyzed by using the double difference method. The results show that: the increase of trade policy uncertainty significantly improves the performance of enterprise technological innovation; the increase of total profit, cash flow and the acceleration of depreciation of fixed assets will positively affect the technological innovation behavior of enterprises; the rising uncertainty of trade policy can affect the technological innovation behavior of enterprises by improving the R&D ability of new products and the profitability of export enterprises; financing constraints are not the channel for trade policy uncertainty to affect technological innovation behavior of enterprises.

In order to study the export trade of China to ASEAN, the HS six-digit code data of UN COMTRADE database are used to calculate the binary margin of export trade based on HK decomposition method. The influence factors of the binary boundary are analyzed by the extended gravity model. The Poisson pseudo maximum likelihood(PPML)method is used to ensure the robustness of the results. The conclusion shows that the Chinese export to ASEAN mainly grows along the intensive margin, and the expanded margin contributes more to the export of manufacturing industry. The size of the Chinese economy and the signing of agreement of China-Singapore Free Trade Area promote the binary margin, but the size of the ASEAN economy and the degree of trade freedom hinder the growth of the binary margin.

Taking the literature on community policy research in Web of Science SSCI sub-database from 1975 to 2018 as an analysis sample, the panoramic appearance of community policy research of foreign scholars is shown through knowledge map by applying visual data mining software CiteSpaceV. It mainly includes keywords co-occurrence analysis, co-occurrence analysis of national cooperation, co-occurrence analysis of scientific research institutions, and co-occurrence analysis of scientific fields. The research finds that:the research fields of community policy abroad include four aspects of research on community health policy, research on community care policy, research on community education policy, and community policy evaluation; The USA, UK, Australia and Canada are concentrated in the field of community policy research; The cooperative network of scientific research institutions takes colleges and universities as absolute subject, and has not yet formed a mature cooperative system, in which central scientific research institution has not yet appeared; The research method is mainly quantitative research, especially researches related to community policy evaluation; The main fields involved in community policy research are public administration, government and law, health care science, ecological environment science, and politics, etc.

According to the changes of Chinese FDI scale and regional conditions from 2008 to 2017, it is explored how the political risks of host countries affect Chinese OFDI. The 105 sample countries are selected, the basic hypothesis is put forward and the model is constructed, and the appropriate explanatory variables, explained variables and control variables are used for empirical analysis. The empirical results show that the Chinese foreign direct investment tends to flow into countries or regions with high political risk, and the market size of host country is positively related to the Chinese foreign direct investment flow. The three reasons of empirical result is contrary to hypothesis are analyzed, and feasible suggestions for the government and enterprises are put forward.

Since the Belt and Road initiative was put forward, infrastructure construction has always been a priority area in China’s construction. Based on the panel data of the countries along the Belt and Road from 2007 to 2018, the relationship is analyzed among green logistics and environment, economic growth by using the dynamic panel Generalized Method of Moments(GMM). The research reveals that the fossil fuel consumption is at the heart of logistics operations, and the more the fossil fuel is used, the more the negative effects it has on environmental sustainability. Green logistics in the Belt and Road countries is negatively correlated with fossil fuel energy consumption and per capita carbon emissions. Meanwhile, it can also bring more export opportunities and increase per capita national income in these countries. Therefore, the development of green logistics will have great significance on the sustainable development of environment and economy of the countries along the Belt and Road.

In order to study the influencing factors of the fluctuations of the Chinese export status of mechanical and electrical products to Vietnam from 1997 to 2017, CMS model is used to analyze the influencing factors of Chinese export trade fluctuation of mechanical and electrical products to Vietnam in four stages. The results show that the contribution of structural effect to the export growth of mechanical and electrical products to Vietnam increases gradually, and the increase of Vietnamese demand for mechanical and electrical products has become the most important factor to promote export since 2009. The competitiveness effect and cross-effect have a relatively smaller contribution to the export of the mechanical and electrical products to Vietnam, and the trend continues to decline, which restricts the export in the later period. The Vietnamese competitiveness of several kinds of mechanical and electrical products with fast demand growth is improved slowly.