G2, also known as G2, is an international economic cooperation forum, which was established in Berlin, Germany on December 16th, 1999. It belongs to a mechanism of informal dialogue within the framework of the Bretton Woods system, and is composed of the former G8 and the other 12 important economies. The summit aims to promote open and constructive discussion and research on substantive issues between industrialized developed countries and emerging market countries, so as to seek cooperation and promote international financial stability and sustained economic growth. In accordance with past practice, the International Monetary Fund and the World Bank attended the meetings of the organization as nonvoting delegates.