The 2018 Macroeconometric Modelling Workshop (MMW) was held on 6-7 December, 2018, and a forum named “New Order of International Trade” was held in the first day’s afternoon. The forum was chaired by Tien-Wang Tsaur, Chairman of Chung-Hua Institution for Economic Research. Professor Deng-Shing Huang from IEAS had served as the moderator, who brought out the topic of “Unbalanced World Trade—the origin of China–United States trade war and the challenge of New Trade Protectionism”. Deputy Director Roy Chun Lee from the Taiwan WTO and RTA Center, Chung-Hua Institution for Economic Research, Professor Zheng Michael Song from the Chinese University of Hong Kong, Professor Chu-Chia Lin from National Cheng Chi University, Professor Zhigang Tao from Hong Kong University and Political Deputy Minister Ming-Hsi Kung from Ministry of Economic Affairs, R.O.C. were invited as the panelists. During the forum, all panelists had first discussed about the context and possible future of the 2018 China–United States trade war, and further developed to analyze the possible impact and challenge future world trade may face.