The U.S. government has recently imposed a suspension on the export of critical technologies to China, encompassing sectors such as aero-engines and semiconductor chips. This action has directly impacted the production of the C919 passenger plane by China's Commercial Aircraft Company (COMAC). According to reports, the U.S. Department of Commerce has revoked the licenses for selling pertinent products and technologies to COMAC. In response, China's Ministry of Foreign Affairs has voiced its opposition, stressing the importance of jointly upholding the multilateral trading system and the stability of the global supply chain. Despite these technological constraints, the C919 passenger plane continues to attract international attention and could potentially emerge as a viable alternative to Boeing and Airbus. To date, the U.S. Department of Commerce has not issued an official statement regarding this matter.