Someone sent Ding to talk about it.

Du Yu of Shu passed the throne to Master Roshi, and Master Roshi passed it on to his descendants. Later, they moved to Chengdu. At that time, the powerful state of Qin often wanted to annex Shu. However, the terrain of Shu is dangerous. As the saying goes, one person's strength is above ten thousand people, and it is not easy for an army to pass. This is obviously not the way. The cunning King Hui of Qin came up with a clever plan: He made five bull heads and put a pile of gold on Shi Niu's ass every day, falsely claiming that Shi Niu was a Taurus and could pull a pile of gold every day.

The greedy king of Shu heard the news and wanted to get these so-called Taurus, so he asked the king of Qin for it, and the king of Qin immediately agreed. But Shi Niu is very heavy, how to move it? At that time, there were five Hercules in Shu, who were very powerful and were called Wu Ding Lux. King Shu told them to cut the mountain and bring Taurus back. Five Ding Lishi finally opened a Taurus road, pulled these so-called Taurus back, and returned to Chengdu, only to find that it was only Shi Niu, only to know that he had been cheated. The queen of Shu came to a client, severely scolded the monarch of Qin for his bad faith, and shipped these Shi Niu back to Qin. The king of Qin said that he was very happy to hear that Jinniu Road had been opened. -Baidu Encyclopedia