特朗普果然没安好心，一天之内多华多次出手，不能再轻信美国了

Group 1 - The Trump administration has intensified its attacks on China, including halting the sale of engine technology for the C919 aircraft and threatening to revoke visas for Chinese students, as well as planning to impose tariffs of up to 100% on cranes [1][3][5] - The strategy employed by the Trump administration reflects a short-sighted and anxious approach, characterized by a "salami-slicing" tactic, where attacks are made on various fronts sequentially, despite showing a facade of goodwill in trade negotiations [3][5] - The suspension of engine technology sales to China may inadvertently accelerate China's efforts to achieve domestic alternatives in aircraft manufacturing, as the C919 is already a product of China's independent research and development [5][7] Group 2 - The announcement to revoke visas for Chinese students aims to weaken China's future technological competitiveness, but it has faced strong resistance from China and concerns from U.S. educational institutions about the potential loss of talent and research capabilities [5][7] - The ongoing pressure on the Trump administration to maintain a hardline stance against China may lead to a situation where the U.S. becomes increasingly dependent on China, contradicting the intended goals of the sanctions [7]