Core Viewpoint - China Mobile has successfully completed the first large-scale, cross-provincial commercial trial of the BeiDou satellite co-view synchronization system, marking a significant advancement in high-precision time synchronization capabilities from "metropolitan autonomy" to "national integration" [1][2]. Group 1: Technical Achievements - The trial utilized the distributed satellite co-view (DCV) technology to achieve nanosecond-level high-precision time synchronization across a nationwide network, overcoming the previous issue of "time islands" in metropolitan areas [1]. - The implementation of the industry standard for the BeiDou satellite co-view synchronization system (YD/T 4769-2024) in this large-scale trial represents a significant milestone in the integration of communication networks and high-precision time synchronization [1][2]. - The relative time difference between different regional time servers was stabilized within 9 nanoseconds, which is an improvement of more than an order of magnitude compared to traditional methods [2]. Group 2: Infrastructure and Future Outlook - The trial achieved a deep integration of national-level timing infrastructure with communication networks, utilizing the high-precision ground timing system from the National Time Service Center as a unified reference for standard time signals [2]. - China Mobile plans to continue enhancing collaboration with various sectors to accelerate the construction of a nationwide integrated time-space synchronization network, which will support emerging services such as 6G communication, computing networks, and artificial intelligence [2].

Core Points - The U.S. National Security Agency has been accused of cyberattacks on China's National Time Service Center, with evidence of infiltration and data theft from staff mobile devices since 2022 [1][10] - From August 2023 to June 2024, the U.S. is reported to have deployed 42 specialized cyberattack tools to conduct large-scale attacks on the National Time Service Center, aiming to penetrate high-precision ground timing systems [1][10] Summary by Relevant Sections Cybersecurity Threats - The U.S. has exploited vulnerabilities in a foreign brand's mobile SMS service to gain unauthorized access to the mobile devices of multiple staff members at the National Time Service Center [1][10] - The attacks are characterized as being conducted with national-level intensity, indicating a significant threat to China's timing infrastructure [1][10] Importance of the National Time Service Center - The National Time Service Center is crucial for maintaining the national standard time, which is aligned with Coordinated Universal Time (UTC) [3] - It is located in Xi'an, Shaanxi Province, chosen for its stable geological structure and ability to cover signals nationwide [3][4] Implications of Timing Errors - Even a one-second deviation in time can lead to significant disruptions, such as power outages due to timing errors in power stations [5] - A microsecond error could result in billions in changes in international stock market transactions [6] - Timing inaccuracies can also affect the precision of satellite positioning systems like BeiDou, leading to location errors of up to 30 centimeters [6][7]