The Yangshan Tunnel, a controlled project of the Menghua railway located in Yan 'an City, was completed on August 10. The tunnel has a total length of 11.7 kilometers and is one of the 10 long tunnels with a length of more than 10 kilometers across the .

At 10:20 on the 9th, with a loud noise coming from the depths of Micang Mountain in Nanjiang County, Bazhong City, Sichuan Province, the Micangshan Tunnel, which lasted five years and a total length of 13.8 kilometers, was officially completed.

At 10:20 on the 9th, with a loud noise coming from the depths of Micang Mountain in Nanjiang County, Bazhong City, Sichuan Province, the Micangshan Tunnel, which lasted five years and a total length of 13.8 kilometers, was officially completed.

On August 5th, it was learned from the Jinshen Railway Engineering Headquarters of the China Railway Sixth Bureau that the Shenzhen-Shenzhen High Speed Rail Stem Wei Tunnel was successfully completed. This is the first tunnel through the Guangdong section of the Shenzhen-Shenzhen High Speed Rail. The Houwei Tunnel is located in Dongshui Town, Heping County, Guangdong Province. The tunnel has a total length of 164.63 meters and a maximum burial depth of 29.5 meters. Construction began on April 1, 2018.

On July 31, the second longest tunnel on the Jiangtong Expressway, the Ford Tunnel, was safely completed, marking another major step forward in the overall construction of the Jiangtong Expressway to overcome difficulties.