What tunnels are there on the secondary road from Cangwu County to tengxian?

Panlong 'ao tunnel. S20 1 Cangwu Jingnan-Wuzhou Renhe Port Highway Project, Cangwu Weilong-tengxian Tandong First Class Highway Reconstruction Project is near Panlong 'ao Tunnel, and there is a Panlong 'ao Tunnel on Cangwu County-tengxian Second Class Highway. For the need of ecological function, there will be one or two low mountain tunnels. Tunnel is built in the soil layer, which is an underground passage built under the soil layer to meet the needs of railways, highways, pipelines, mines and military projects.