Group 1 - The U.S. proposed a three-step sanction plan against China, which includes restricting Chinese airlines' landing rights in the U.S. and allied countries, tightening export controls on aircraft and related services, and limiting Chinese investment in the aviation sector [3][5] - The proposal could negatively impact U.S. companies like Boeing, which relies on the Chinese market for business opportunities, including providing engine technology for China's C919 aircraft [5][6] - The European companies, such as Airbus and Volkswagen, are also dependent on the Chinese market, making it unlikely that major EU countries will abandon their supply chains with China [6] Group 2 - China has been actively reducing its holdings of U.S. Treasury bonds, selling a total of $25.7 billion, reaching the lowest level since 2009, as a strategy to distance itself from the dollar and mitigate the impact of U.S. monetary policy fluctuations [6][7] - In contrast, U.S. allies like the UK and Japan are increasing their holdings of U.S. debt, which puts them in a vulnerable position when U.S. interest rates rise [7][9] - The reduction in U.S. Treasury holdings by China is a strategic move to promote de-dollarization and the internationalization of its currency, while the U.S. faces challenges in managing its massive debt [9]