48小时内，美国3次对华威胁，中方祭出“王牌”，比关税更狠！

Group 1 - The core point of the news is the significant reduction of bilateral tariffs between China and the U.S., leading to a surge in shipping demand and rising freight rates as companies rush to fulfill backlogged orders within a 90-day window [1][3] - Following the announcement, shipping companies immediately raised prices, with rates for shipping containers to the U.S. West Coast reaching $6,000 in June, indicating a strong supply-demand dynamic in the market [1] - Despite the tariff reductions, there are indications that the U.S. may continue to pursue its tariff policies post the 90-day period, with potential threats of increased tariffs still looming [3] Group 2 - The U.S. Department of Commerce has revoked the AI export rules established during the Biden administration and is implementing stricter controls on global chip exports, particularly targeting China [4] - China has initiated a crackdown on the smuggling and illegal export of strategic minerals, including rare earths, to prevent the U.S. from circumventing export controls through third-party countries [6][8] - The recent actions by China to tighten export controls on rare earths are seen as a strategic move to leverage its position in negotiations with the U.S., potentially leading to increased prices and supply chain challenges for American companies [8]