美国为什么咬着华为不放？开始全球封杀华为AI芯片，他们怕什么？

Group 1 - The U.S. government has escalated its technology war against China by banning the use of Huawei's Ascend 910 AI chip globally, with violations potentially leading to a 20-year prison sentence [1] - The U.S. has consistently used "national security" as a justification for sanctions against Huawei, but this time no specific reason has been provided [2] - The ban on Huawei's AI chip may be an attempt by the U.S. to regain face after the failure of the tariff war against China, which has shown resilience and strength [4] Group 2 - The U.S. is reportedly desperate to use the Huawei AI chip ban as leverage to negotiate for China's rare earth exports, which China is currently unwilling to discuss [7] - Despite the ban, the Chinese market for AI chips, particularly for Huawei's Ascend 910, is robust enough to sustain the company for many years, as China is the largest market for AI chips globally [9] - The U.S. is facing a decline in its AI dominance, with companies like NVIDIA experiencing significant sales drops due to export restrictions, while Huawei's AI chip is positioned to fill the gap and potentially surpass NVIDIA [10] Group 3 - The series of actions taken by the U.S. in trade, technology, and tariffs against China indicate a growing sense of desperation, as the U.S. has exhausted most of its leverage [13]