It has nothing to do with the three countries. This is a story from the Warring States Period.

"Biography of the King of Shu" "Thousands of people died, dragging cattle into the Tao from the land of Wudingli".

Jinniu Road, also known as Shi Niu Road, is named after the story of "Stone Cow Dung Gold, Five Dings Clear the Way" and Shi Niu can dung gold. The story of golden cow dung happened in the period of Bian and Ding. In the ninth year of King Huiwen of Qin (3 16 BC), Wang Hui, King of Qin, presented the Golden Bull to King Shu, hence the name Jinniu Road.