Beidou satellite short messages are unique, and high-precision applications are currently only available in China. At 9:43 on June 23, 2020, my country used the Long March 3B carrier rocket at the Xichang Satellite Launch Center to successfully launch the 55th navigation satellite of the Beidou system and the last global networking satellite of Beidou 3. This marks the complete completion of the deployment of the Beidou-3 global satellite navigation system constellation. Beijing Exclusive Interview Ran Chengqi, Director of the China Satellite Navigation System Management Office and Deputy Chief Designer of Beidou Satellite Navigation System Engineering, said in an interview that this satellite has the short message capability of our Beidou, which is greatly improved compared to the Beidou-2 system currently used in the sky. Beidou-2 is capable of texting 120 Chinese characters per text message, and Beidou-3 is capable of texting 1,000 Chinese characters per text message. What other abilities do you have besides that? It can transfer images and make voice calls. This is a major breakthrough. This is a sign of China's scientific and technological progress, aerospace technology progress, and the significant progress of the Beidou team's technical research. It is a unique capability in the world. IT House learned that the Beidou satellite navigation system is a global satellite navigation system independently constructed by my country that is compatible with other satellite systems in the world. The most important differentiated services of the Beidou system are short message services and high-precision services. The basic navigation service of Beidou-3 can provide global positioning services with an accuracy better than 5 meters. In terms of precision positioning, the highest precision positioning can reach the decimeter level dynamically and the centimeter level statically. Ran Chengqi said, I often describe it this way, if the taxi is equipped with this high-precision system, it can drive the car under your feet with your eyes closed. This is our Beidou's special service. This is a remarkable change and a huge achievement. This high-precision application is currently only available in China, and will be promoted to the world in the future. At present, Beidou global satellite navigation system services are provided by Beidou-2 and Beidou-3 systems. After 2020, there will be a smooth transition to Beidou-3 system. It is planned to build a more ubiquitous, more integrated, and more intelligent comprehensive space-time system with Beidou system as the core by 2035. Ran Chengqi said that the timing accuracy of our Beidou satellite is also the highest in the world. Ten nanoseconds means that the error in the time you receive will not exceed ten nanoseconds. One nanosecond is ten to the negative ninth power. On June 23, the last Beidou-3 global networking satellite was successfully launched. All 30 Beidou-3 networking satellites were in place, and the deployment of the Beidou-3 global satellite navigation system constellation was fully completed. The Beidou-3 global satellite navigation system consists of satellites in three different orbits: MEO satellites (medium earth orbit satellites), IGSO satellites (inclined geosynchronous orbit satellites) and GEO satellites (geostationary orbit satellites), including 24 MEO satellites, 3 IGSO satellites and 3 GEO satellites. IT House has learned that more than half of the countries in the world currently use Beidou. After the global system is completed this year, Beidou will provide services no matter where in the world