Although it was short in time, its traffic role continued. During the Qin and Han periods, the materials were transported from Sichuan and Hanzhong to Kyoto Xianyang or Chang'an, and the ramp and the old road were taken more, and the Meridian Road was not taken. After Liu Bang, the ancestor of Han Gao, went to Hanzhong and sent Zhang Liang to burn the Ziwu Plank Road. When he arrived at Pingdi Yuan for five years, Wang Mang ordered the chisel and set up the Ziwu Pass. Since then, the Ziwu Road has often been used by the regime based on Guanzhong as a channel for attacking Hanzhong, Ankang, Sichuan, Hubei and other places.