Group 1 - The core issue revolves around the U.S. Treasury Secretary's remarks regarding China's oil purchases from Russia and Iran, which are seen as a point of contention in U.S.-China trade negotiations [1][3] - The U.S. aims to weaken the economic power of Russia and Iran by pressuring China to halt its energy purchases, viewing China's actions as undermining the effectiveness of sanctions [3][6] - China has firmly rejected U.S. interference in its energy trade, asserting that its relations with Russia and Iran are diplomatic matters and not subject to U.S. negotiation [3][4] Group 2 - China's recent diplomatic engagement with Iran and Russia indicates its commitment to maintaining normal trade relations despite U.S. threats, emphasizing its stance on international fairness and justice [4][8] - The U.S. domestic response to its hardline energy policies includes warnings from the U.S. Chamber of Commerce about potential WTO disputes and disruptions in domestic energy supply chains [6] - China's energy strategy focuses on diversifying its import sources and reducing reliance on U.S. dollar transactions, with over 70% of its energy consumption coming from imported oil [6][8]