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.

New progress has been made in the construction of the Erqi Tunnel, which has received much attention from the public. The "Construction Project Site Selection Opinion" of the Erqi Tunnel(Phase I) project is being publicized. The project site is from the west of Lake Avenue to the east of Hongdu North Avenue. The land area is about 562 acres. The Erqi Tunnel is positioned as the main road of the city. The first phase of the project is the Huangjiahu section(Xiangjiang intersection) to the Hongdu Avenue section. The route is to Bihu Avenue-Jinjiang Road-Minjiang Road-Erqi North Road. The total length is about 7.2 kilometers.

This morning, the Nanjing Metro Line 5 ushered in the core node-the first shield "beyond" shield machine on the entire line successfully originated in the Jiyin station-Jiulonghu station section(hereinafter referred to as the Ji-Jiu section) of the TA01 standard section. This marked a phased victory for the entire project and entered a new construction peak.