On October 28, the U.S. issued final rules on investment restrictions targeting China, aimed at limiting U.S. businesses and individuals from engaging in specific transactions with China (including Hong Kong and Macau) in the fields of semiconductors, quantum information technology, and artificial intelligence (AI). The rules will come into effect on January 2, 2025. This policy will, to some extent, hinder Sino-American cooperation in fields such as semiconductors and marks an escalation of the U.S. efforts to curb China's development in high-tech sectors.