中美第四轮会谈，要谈三大问题，关税战进入攻坚战，美国进退两难

Group 1 - The upcoming high-level economic talks between China and the U.S. in Madrid will focus on three core issues: U.S. punitive tariffs, export control expansions, and TikTok ownership negotiations [3][5] - The tariff issue is critical as it relates to the U.S. "America First" trade policy initiated by the Trump administration, which has been a cornerstone of its trade strategy since April 2024 [5] - The U.S. has increasingly weaponized economic tools under the guise of national security, particularly in sectors like semiconductors and biotechnology, complicating negotiations on export controls [5][9] Group 2 - The TikTok ownership debate highlights the ideological and economic tensions in the digital economy, with both sides unlikely to compromise due to national pride and political considerations [7] - Recent trade data shows a stark contrast between China's overall trade growth of 5.9% and a 13% drop in U.S.-China trade, indicating a trend of economic decoupling [9] - The U.S. is attempting to form an anti-China tariff coalition, pressuring allies to impose significant tariffs on Chinese goods, while China is focusing on expanding domestic demand and enhancing its strategic positioning [11]