As the location of China's dragon vein and the Father Mountain of Shaanxi people, the Qinling Mountains span the east and west of the motherland and stretch for about 1600 kilometers. It is not only the watershed between the Wei River and the Han River, but also the dividing line between the north and south of our country. This huge mountain range has far-reaching influence in both Chinese history and geography. The 1930s was a period of large-scale construction of cross-provincial national highways in my country. In order to connect transportation, the highway connecting Shaanxi and Sichuan crossed the Qinling Mountains. There is a famous mountain tunnel in the Qinling Mountains, the Qinling Mountains Zhongnanshan Tunnel.

The Zhongnanshan Tunnel in the Qinling Mountains is 18.02 kilometers long and takes 15 minutes to pass through at an average speed of 80 kilometers per hour. Therefore, this is the longest twin-hole tunnel in the world. It only takes 15 minutes to complete the north and south crossing. To the south of the tunnel is Zhashui in Shangluo, and to the north is Chang 'an District in Xi'an. Because this tunnel is too long, in order to prevent drivers from losing their sense of direction and visual fatigue inside, tricks have been made in the tunnel. Many coconut trees are planted on both sides of the entire tunnel, as well as lighting facilities, with different colors of lights in different locations. A total of three landscape belts were built within a 15-minute journey, and such tunnels are extremely rare across the country.

The Qinling Zhongnanshan Tunnel is one of the cross-provincial national highways connecting all provinces in my country. At the same time, a large number of old Qinling National Roads were born from Guanzhong to southern Shaanxi and Sichuan and Sichuan. The Qinling Mountains have become a veritable "highway tunnel museum". Among them, the longest Qinling Zhongnanshan Tunnel is difficult to imagine. The Qinling Zhongnanshan Tunnel is a world-class project. It took a lot of manpower and material resources to build the tunnel, and it took five years to build it. After completion, it shortened the straight-line distance from Guanzhong to southern Shaanxi, and it has also won many road awards internationally. Ultra-long tunnels like this will also consider a series of measures such as ventilation and fire protection. In this regard, fire alarm buttons and fire hydrants are installed every 50 meters inside the tunnel, and there are also many crosswalks in danger. Can help vehicles and people move quickly. The Zhongnanshan Tunnel in the Qinling Mountains embodies the highest comprehensive technical level of tunnel construction in my country, making the Qinling Mountains, the north-south dividing line in my country, no longer an insurmountable peak.

The location of the Zhongnan Mountain Tunnel in the Qinling Mountains is Zhongnan Mountain, one of the largest branches of the Qinling Mountains. Zhongnan Mountain and Xiyue Huashan Mountain are representatives of the natural scenery of the Qinling Mountains. Zhongnan Mountain is surrounded by mountains and river valleys, with thousands of green peaks and beautiful scenery. The main peak is 2604 meters above sea level, making it one of the famous birthplaces of Taoism.

Our country has been committed to the construction of roads since ancient times. A "highway" built during the Qin Dynasty is still barren of grass. Today, tourists can easily cross the Qinling Mountains from the Guanzhong Plain in Shaanxi to Sichuan and Sichuan. The Zhongnanshan Tunnel in the Qinling Mountains attracts many tourists. Come to experience the charm of this "world's first tunnel" and become the classic route of choice for people to travel on their own roads.