Group 1 - The article highlights China's efforts to fill the leadership void left by the U.S. in Southeast Asia, particularly in promoting open trade and strengthening regional economic ties during a summit in Kuala Lumpur [1][3] - The U.S. under President Trump is facing criticism for its high tariffs on Southeast Asian countries, which analysts believe is a strategy to pressure these nations to align with U.S. interests against China [3][4] - The Regional Comprehensive Economic Partnership (RCEP), supported by China, is emphasized as a significant trade agreement that could buffer the impact of U.S. tariffs, covering about 30% of global GDP [4][6] Group 2 - China's call for maintaining free trade and opposing protectionism is seen as a direct response to U.S. tariff policies, aiming to promote regional economic integration [3][4] - The article notes the challenges China faces, such as criticism from the Philippines regarding its actions in the South China Sea, which complicates its regional leadership aspirations [4][6] - Brazil's President Lula expresses optimism about achieving better trade agreements with the U.S., reflecting a common sentiment among Southeast Asian nations to balance relations with both the U.S. and China [6][7]