中美四轮谈判，美国下马威，最高对华加税100%，中方反手断美财路

Group 1 - The U.S. government is proposing to impose tariffs of up to 100% on Chinese goods as part of a strategy to address China's import of Russian energy, indicating a shift towards "economic weaponization" in geopolitical conflicts [1][3][4] - The G7 countries are divided on the issue, with Canada, Germany, and Japan expressing concerns about the economic impact of high tariffs on their own economies, particularly in sectors reliant on trade with China [6][8] - The U.S. Commerce Department has added 23 Chinese companies to an export control list, targeting key technology sectors such as semiconductors and biotechnology, which reflects a strategic shift towards "precise blockade" against China's tech industry [8][10] Group 2 - China's response includes launching an anti-discrimination investigation into U.S. trade policies related to integrated circuits, indicating a formal legal countermeasure rather than an emotional reaction [12] - China is diversifying its agricultural imports, signing significant soybean purchase agreements with Argentina and Brazil, which could undermine U.S. agricultural exports and impact domestic prices [15][17] - The upcoming negotiations in Madrid are expected to be tense, with both sides facing pressure to maintain their positions, and the outcome will depend on the actions taken over the years rather than just discussions at the negotiation table [19]