[Why did the US attack the National Timing Service Center] On October 19, the national security agency issued an announcement stating that it had ironclad evidence that the US National Security Agency's cyber attack invaded China's National Timing Service Center. It is mentioned that starting from 2022, the United States has used a loophole in a foreign brand's mobile phone text message service to secretly attack and control the mobile phone terminals of multiple staff members of the National Timing Center and steal sensitive information stored in the mobile phones. From August 2023 to June 2024, the United States used 42 special cyber attack weapons to attack our country's timing center on a large scale with national intensity, and waited for opportunities to further penetrate into high-precision ground-based timing systems. Why did the United States carry out cyber attacks on such a place?