On December 1, 2025, the President of the Global Alliance for Trade in Services (GATIS), Jiang Zengwei, met with Michael Hahn — a renowned scholar of international economic law — in Beijing, where the two sides held in-depth discussions on hot issues in international economic law and the WTO legal system. GATIS Deputy Secretary-General Chen Ning, expert Xing Houyuan, and Zhao Hong, a professor from Peking University Law school attended the event.