On the 16th, a high-speed railway comprehensive inspection vehicle comprehensively inspected the line from Dekalur Station of Ya'an Wanzhou High speed Railway to No. 4 beam yard, and the obtained indicators and parameters performed well. This marks the first successful trial operation of the Yahwan high-speed railway jointly constructed by China and Indonesia. This test run mainly arranged a comprehensive inspection vehicle to conduct a comprehensive inspection of subgrade, track, communication, signal, traction power supply and other systems. The train can detect more than 60 parameters such as track, catenary, communication, signal and other equipment status and train dynamics response under high-speed operation. The test operation results show that all index parameters of the section project fully meet the design requirements, laying a solid foundation for the follow-up project construction and operation of Ya'an Wanzhou High Speed Railway. At present, the construction of Ya'an Wanzhou High speed Railway is progressing smoothly. All 13 tunnels along the line have been completed, box girder erection has been completed, and track laying on the main line is progressing in an orderly manner; The development of high-speed EMUs and comprehensive inspection vehicles for Ya'an Wanzhou high-speed railway has been completed; The 14 km line from Dekalur Station to No. 4 beam yard has been completed, and the hot slip test of EMU trains under the electrification of the catenary has been successfully carried out. As the first high-speed railway between Indonesia and Southeast Asia, the Yahwan high-speed railway connects Jakarta, the capital of Indonesia, and Bandung, a famous tourist city. The total length is 142 kilometers, and the maximum operating speed is 350 kilometers per hour. The construction was fully started in June 2018. This is a landmark project for the construction of the "the Belt and Road" and the practical cooperation between China and Indonesia. It is also the first overseas construction project of China's high-speed railway with the whole system, all elements and the whole industry chain. Chinese technology and Chinese standards are adopted throughout the line. After the completion of the project, the travel time between Jakarta and Bandung will be shortened from more than 3 hours to 40 minutes. (Liu Xinshe)