The origin of the name Rouge Tunnel is that it was named after the ancient Rouge Road and tunnel were built in modern times.
The Yanzhigui Tunnel is a section of tunnel located in Yuexi County, Anhui Province. It existed during the Ming and Qing Dynasties. After the tunnel was built in modern times, it was named Yanzhigui Tunnel.
Tunnel is a road formed by excavating underground or digging into rocks for carrying trains, etc.