Introduction to the Baoxie Plank Road: Since the Spring and Autumn Period and the Warring States Period, in order to cross the natural dangers of the Qinling Mountains, the ancients drilled holes in the cliffs along the valleys and valleys. The horizontal timbers were used as beams and the upright trees were used as columns, and then they were laid with wooden planks to form a plank road. There are seven plank roads that pass through the Hanzhong Basin, including the Gu Road, the Baoxie Road, the Tangluo Road, the Ziwu Road, the Jinniu Road, the Beige Road and the Lizhi Road. Among them, the Baoxie Road is the most famous. From the Xieyuguan Pass in Meixian County, Guanzhong, it is a winding road with rugged mountains and a total length of 235 kilometers. Since the Qin and Han Dynasties, in order to strive for freight connectivity, economic benefits, ethnic integration and national reunification, many changes have been staged on this road. A powerful and majestic historical drama.