关税问题加剧国际经贸不确定性，如何寻求破局之道？

Group 1 - The global economic and trade environment is undergoing profound changes, with increasing uncertainty due to high tariffs and rising protectionism, which suppresses corporate investment decisions and innovation [4][5] - The restructuring of the international trade and investment system creates new development opportunities for global South countries, as they can attract more trade and investment due to their competitive advantages in lower costs and tariffs [4][5] - The importance of enhancing domestic circulation in China is emphasized, with suggestions to break down barriers in the unified market, evaluate macro policies effectively, and support the development of the private economy [8][6] Group 2 - The need for China to increase fiscal spending and social security to stimulate domestic demand and achieve economic rebalancing is highlighted [7][6] - The diversification of the global monetary system is anticipated, with more currencies from emerging markets participating in international transactions and an increased focus on digital currencies for cross-border trade [9]