On the afternoon of December 8, 2018, the academic seminar on "International Trade Relations and the Reconstruction of Global Economic Governance" - Sub - session 2: "The Impact of International Trade Frictions on the Global Value Chain" was successfully held at Tsinghua University. Experts and scholars from all walks of life participated in the meeting. This meeting was co - hosted by the Center for International Finance and Economic Research (CIFER) of the National Institute of Financial Research at Tsinghua University and the Center for Monetary Policy and Financial Stability Research.Li Bing, an associate professor at the School of International Economics and Trade of Central University of Finance and Economics, attended the meeting and shared an academic report: The Impact of Military Alliances on International Trade - An Empirical Study Based on the "NATO Expansion" as a Quasi - natural Experiment.

Teacher Li Bing is currently an associate professor at the School of International Economics and Trade of Central University of Finance and Economics and the director of the Department of Trade Economics. He obtained a Doctor of Economics degree from Jilin University in 2008 and a Doctor of Social Sciences degree from the Hong Kong University of Science and Technology in 2011. His main research areas include international trade, foreign direct investment, international political economy, Internet economics, and big data applications. His research results have been published in SSCI English journals such as The Economics of Transition and authoritative Chinese journals such as Economic Research, World Economy, and China Industrial Economics. He has presided over 2 provincial - ministerial - level projects, served as the person - in - charge of a sub - project of a major national social science project and participated in 2 others, participated in 1 major project of the Ministry of Education, and many other provincial - ministerial - level projects and government department projects. He is one of the first - batch mentors in the national talent pool of 10,000 excellent innovation and entrepreneurship mentors, a council member of the Intellectual Property Sub - committee of the China Society for Technical Economics, and an anonymous reviewer for journals such as Economic Research and World Economy.

Teacher Li Bing used the three expansions of NATO after the Cold War as a quasi - natural experiment. Using global bilateral trade data and product - category - specific data from 1995 to 2015, he applied the difference - in - differences method in the gravity model to identify that joining NATO has a promoting effect on the exports of new member states, and also has a promoting effect on both exports and imports between new and old member states. Subsequently, Teacher Li explained in detail the two mechanisms through which military alliances affect trade: On the one hand, the resource re - allocation effect. Joining NATO reduces the per - capita defense expenditure of new member states, allowing more resources to be used for productive investment, thus promoting exports. On the other hand, the strategic mutual - trust effect. The trade of strategic products related to national security has been transferred between new and old member states. At the same time, it also helps both sides to increase investment in country - specific products, strengthen specialized division of labor, reduce the negative impact of bilateral trade frictions, and thus promote the increase of bilateral trade. Finally, Teacher Li summarized the above findings, which provide reference for China's current "Partnership" foreign policy.