The integration of global economy and trade and the integration of regional economy and trade are the two trends of the development of the world economy and trade, and the development forms of the integration of international economy and trade at two different levels. Global economic and trade integration is based on multilateral trade system, and the main form of multilateral trade system is the World Trade Organization (WTO). The WTO has made great achievements in promoting trade and upholding the authority of its rules. China’