Introduction to the Jinniu Ancient Road: The Qin-Shu Jinniu Ancient Road, along with the Great Wall and Lingqu Canal, are known as the three major projects in ancient China and are known as living fossils in the history of world transportation. In the third century BC, the ancient Shu Kingdom opened the Ming Dynasty and ordered Wu Ding to open the mountain and build it, which is 910 kilometers from Chang'an (today's Xi'an, Shaanxi) in the north and 90 kilometers to Yizhou (today's Chengdu, Sichuan) in the south. The difficult road to Shu begins and ends here. The road from crossing the Qinling Mountains to the south is smooth, but the road from Chengdu to the north is dangerous.